HacDC Wiki - User contributions [en]

Category:Stereoscan

2014-09-21T19:48:40Z

Plasma: /* Manuals and Images */ added vacuum gauge

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

Cleaning and assessment in progress.

See [[Stereoscan_Operators_Log]] for details.

=Documentation=

== Manuals and Images ==

* Vacuum gauge: Edwards Penning CP25-k: http://www.idealvac.com/files/manuals/Edwards_CP25K_Cold_Cathode_Gauge_Sensor_Manual.pdf

* Roughing Pump: Edwards E2M-12 255 LPM two stage oil filled rotating vane pump [[File:Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf]]

* Turbo Pump: Pfeiffer Balzers TPH 190
:Similar but smaller unit manual [[File:Pfeiffer_Balzers_TPH_TPU_110_.pdf]]
:Table of pumps to compatible controllers [[File:Pfeiffer_table.pdf]]
::View of pump 1 [[Media:PfeifferTHP190_1.gif]]
::View of pump 2 (connector side) [[Media:PfeifferTHP190_2.gif]]
::View of pump 3 (other side) [[Media:PfeifferTHP190_3.gif]]

== Original ==

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* [http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf Edwards E2M-12 roughing pump user instruction manual]

==757 Labs==

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

* http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only]) ([https://web.archive.org/web/20140401150504/http://757labs.org/wiki/Projects/SEM Internet Archive])

* http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

==Additional Resources==

* The original S200 operating instructions are available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

==More Photos==

* [https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html SEM install and overview]

* [http://imgur.com/a/uR7Yv#0 Close-ups of assembly and components]

* [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Cleaning and vacuum components]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

[[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) Custom electronic control replacement circuitry.

[[User:Plasma|Plasma]] Dan K., plasma on IRC. SEM information, documentation, repair information, problems

Stereoscan Operators Log

2014-04-23T04:05:21Z

Plasma: update

[[Category:Stereoscan]]

'''While repairing, maintaining, or using the Stereoscan S200 SEM, please add notes here. Newest at top.'''

* After more thought, I've come to the conclusion that the column isn't actually missing a gasket on the specimen chamber mating surface. The column fits into a tapered bore inside the top of the chamber, and at the very tip of the column is a thick rubber fitting with a small hole for the beam to pass through. It's this very small air path that gets pumped down when the vacuum is operating, and the surface that makes the pressure seal is the rubber tip to the bottom of the taper, not the two flat disks where the column is bolted in. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 21:05, 22 April 2014 (PDT)

* The replacement O-ring appears to fit on the side vent pipe of the SEM. With some help I was able to remove the column and do a cleaning of all the surfaces, save for the two detectors. It would appear we're missing a gasket for the column to chamber mounting interface, however. 4" ID, 4 3/8" OD, 1/8" thickness. I'll look to see what I can find.

Without that gasket it'd be a metal to metal vacuum fitting, and that doesn't seem right.

There's still some contamination on the bottom of the column I couldn't get off with just acetone. I'll try M.E.K. next time. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 11:12, 22 April 2014 (PDT)

* Latest version of Xilinx ISE software does not support Spartan 3E board. Probably need 10.x version from http://www.xilinx.com/webpack/classics/wpclassic/ . [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 06:43, 12 April 2014 (PDT)

* Dan Barlow commented the following on our mailing list, April 4, 2014:

# Ran the Edwards vane pump. Checked the oil. Looked up the specs and maintenance requirements.
-> I recommend not doing anything else to this pump unless there is an issue. It uses Ultragrade 19 oil, 0.6 Liter which is only about $17 plus shipping, but the current oil looks good.
# Removed the Pfeiffer TPH190 turbo pump from the accordion flange and evaluated its mechanical condition.
http://wiki.hacdc.org/index.php/File:TurboConverted.avi
It appears the pump was intended to hang from the plinth, but the glue holding the rubber donuts to the accordion flanges has failed. This is by far the easiest thing to fix, yay. I replaced the turbo but its cleats are only finger tight.
# Identified and installed the vacuum system control cabling. Had to fix one bent pin. The final cable from the turbo controller to the turbo itself is NOT connected, so as to avoid accidental activation.
# Identified starting backing vacuum for the Turbo, supposedly <5x10^-1 Torr to start, <5x10^-2 torr (warning possible unit conversion failure, anyway the safety interlock should handle this) back pressure for efficient operation to provide 10^-5 in the chamber. The thing moves 190 liters per SECOND and rotates around 30000 RPM. It has a magnetic bearing in the top high vacuum side and a oil lubricated ceramic bearing at the roughing end.
# Identified alternate high vacuum options in case the turbo doesn't work. Looks like we could build an ion/titanium sublimation pump with our existing equipment and while not as fast it certainly works.

* To help keep a TCO log, I am noting that research on replacement electronics systems cost 5 hours. [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 17:14, 3 April 2014 (PDT)

* From Tim: the red vacuum gauge sticking out of the back of the chamber is a cold cathode vacuum gauge. They're pretty reliable, but it could fail to read vacuum, indicating it needs to be cleaned. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 13:07, 2 April 2014 (PDT)

* The following steps need to be performed on the Edwards roughing pump:

** Replace the oil
** Inspect and clean the inlet-filter
** Clean or replace the gas-ballast filters
** Clean the motor fan-cover
** Test the motor condition

Refer to pg. 38 of the user instruction manual

[[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:02, 1 April 2014 (PDT)

* Use <nowiki>~~~~</nowiki> to automatically sign edits with username, date, and time. [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 08:21, 1 April 2014 (PDT)

* March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

* March 30th: Moving complete! The SEM is now in the workshop

* March 29th: Awaiting pick-up and installation (March 29th and 30th).

* March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

Stereoscan Operators Log

2014-04-22T18:12:08Z

Plasma: update

[[Category:Stereoscan]]

'''While repairing, maintaining, or using the Stereoscan S200 SEM, please add notes here. Newest at top.'''

* The replacement O-ring appears to fit on the side vent pipe of the SEM. With some help I was able to remove the column and do a cleaning of all the surfaces, save for the two detectors. It would appear we're missing a gasket for the column to chamber mounting interface, however. 4" ID, 4 3/8" OD, 1/8" thickness. I'll look to see what I can find.

Without that gasket it'd be a metal to metal vacuum fitting, and that doesn't seem right.

There's still some contamination on the bottom of the column I couldn't get off with just acetone. I'll try M.E.K. next time. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 11:12, 22 April 2014 (PDT)

* Latest version of Xilinx ISE software does not support Spartan 3E board. Probably need 10.x version from http://www.xilinx.com/webpack/classics/wpclassic/ . [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 06:43, 12 April 2014 (PDT)

* Dan Barlow commented the following on our mailing list, April 4, 2014:

# Ran the Edwards vane pump. Checked the oil. Looked up the specs and maintenance requirements.
-> I recommend not doing anything else to this pump unless there is an issue. It uses Ultragrade 19 oil, 0.6 Liter which is only about $17 plus shipping, but the current oil looks good.
# Removed the Pfeiffer TPH190 turbo pump from the accordion flange and evaluated its mechanical condition.
http://wiki.hacdc.org/index.php/File:TurboConverted.avi
It appears the pump was intended to hang from the plinth, but the glue holding the rubber donuts to the accordion flanges has failed. This is by far the easiest thing to fix, yay. I replaced the turbo but its cleats are only finger tight.
# Identified and installed the vacuum system control cabling. Had to fix one bent pin. The final cable from the turbo controller to the turbo itself is NOT connected, so as to avoid accidental activation.
# Identified starting backing vacuum for the Turbo, supposedly <5x10^-1 Torr to start, <5x10^-2 torr (warning possible unit conversion failure, anyway the safety interlock should handle this) back pressure for efficient operation to provide 10^-5 in the chamber. The thing moves 190 liters per SECOND and rotates around 30000 RPM. It has a magnetic bearing in the top high vacuum side and a oil lubricated ceramic bearing at the roughing end.
# Identified alternate high vacuum options in case the turbo doesn't work. Looks like we could build an ion/titanium sublimation pump with our existing equipment and while not as fast it certainly works.

* To help keep a TCO log, I am noting that research on replacement electronics systems cost 5 hours. [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 17:14, 3 April 2014 (PDT)

* From Tim: the red vacuum gauge sticking out of the back of the chamber is a cold cathode vacuum gauge. They're pretty reliable, but it could fail to read vacuum, indicating it needs to be cleaned. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 13:07, 2 April 2014 (PDT)

* The following steps need to be performed on the Edwards roughing pump:

** Replace the oil
** Inspect and clean the inlet-filter
** Clean or replace the gas-ballast filters
** Clean the motor fan-cover
** Test the motor condition

Refer to pg. 38 of the user instruction manual

[[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:02, 1 April 2014 (PDT)

* Use <nowiki>~~~~</nowiki> to automatically sign edits with username, date, and time. [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 08:21, 1 April 2014 (PDT)

* March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

* March 30th: Moving complete! The SEM is now in the workshop

* March 29th: Awaiting pick-up and installation (March 29th and 30th).

* March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

StereoscanSupplies

2014-04-05T19:01:26Z

Plasma: Resources

[[Category:PA_SUPPLIES]]
[[Category:Stereoscan]]

=Resources=
In addition to the suppliers listed below:

* [http://2spi.com/ SPI]. Sells microscopy products (widely used for SEMs)

* O-rings: [http://www.applerubber.com/src/pdf/as568-standard-size-o-rings.pdf AS568 Standard O-Ring Sizes (PDF)], [http://www.applerubber.com/src/pdf/iso-3601-metric-size-o-rings.pdf ISO 3601 Standard Metric O-Ring Sizes (PDF)]

=Wishlist=
'''Not available, but may be needed.'''

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)
** Tim G., SEM contact, says any old Viton o-ring is suitable.
** Ring measures 56mm Dia., 2.75mm thickness. [http://i.imgur.com/Yg3Knvi.jpg Source]
** [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:10, 1 April 2014 (PDT)
**: If they're deformed (crushed) or leave a residue when pressed onto a clean surface, then they need replacing. But really, if the vacuum holds.. let 'em be. -[[User:Gatohaus|Gatohaus]] ([[User talk:Gatohaus|talk]])

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)
** Pg. 4 of the manual recommends 0.8 liters of Edwards Ultragrade 19 http://www.edwardsvacuum.com/Products/H11025015/View.aspx ($17 per. liter). [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 08:38, 2 April 2014 (PDT)

* '''IFF''' inspection indicates we need to refurbish the E2M-12 pump, we can buy a repair kit here for $110 (cheaper than from Edwards) http://www.pchemlabs.com/product.asp?pid=1896. Item number: A371-01-131. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 09:59, 2 April 2014 (PDT)

* [http://www.amazon.com/Caldrea-Lint-Cleaning-Cloths-6-Count/dp/B008KWJ0MO Lint free cloths] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)
*: Maybe these instead? Kimwipes: http://amzn.com/B001D8XLKE

* Hand lens (for detecting fibers or hair on the mating surfaces) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.2spi.com/catalog/supp/supp3a.php Wenol Metal Polish] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.amazon.com/Innovative-Products-9010-SWAB-EEZ-Industrial/dp/B004HSCMXE/ Lint-free swabs] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:26, 3 April 2014 (PDT)

* [http://www.amazon.com/Grip-Pc-Plastic-Funnel-Set/dp/B003MRN0XM/ Oil funnel] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:31, 3 April 2014 (PDT)

* Disposable gloves to keep organic, warm-pressed human oil off of components.
*: KC Nitrile are nice, $14 per 100, maybe there's another non-latex option that's cheaper?: http://amzn.com/B005ENLZHU

=Available=
'''Already at the space.'''

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Acetone. ([http://www.amazon.com/Rust-Oleum-Automotive-248667-32-Ounce-Acetone/dp/B003Y8DI4K If we need more]) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* Cleaning alcohol [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:31, 3 April 2014 (PDT)

=RoutinelyConsumed=
'''Frequently burned up in normal operation.'''

* E-Beam Emission Filament. Hopefully we can keep that item out of the 'RoutinelyConsumed' category by warming it up gently.

StereoscanSupplies

2014-04-03T22:31:37Z

Plasma: supplies

[[Category:PA_SUPPLIES]]
[[Category:Stereoscan]]

=Wishlist=
'''Not available, but may be needed.'''

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)
** Tim G., SEM contact, says any old Viton o-ring is suitable.
** Ring measures 56mm Dia., 2.75mm thickness. [http://i.imgur.com/Yg3Knvi.jpg Source]
**
** [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:10, 1 April 2014 (PDT)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)
** Pg. 4 of the manual recommends 0.8 liters of Edwards Ultragrade 19 http://www.edwardsvacuum.com/Products/H11025015/View.aspx ($17 per. liter). [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 08:38, 2 April 2014 (PDT)

* '''IFF''' inspection indicates we need to refurbish the E2M-12 pump, we can buy a repair kit here for $110 (cheaper than from Edwards) http://www.pchemlabs.com/product.asp?pid=1896. Item number: A371-01-131. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 09:59, 2 April 2014 (PDT)

* [http://www.amazon.com/Caldrea-Lint-Cleaning-Cloths-6-Count/dp/B008KWJ0MO Lint free cloths] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* Hand lens (for detecting fibers or hair on the mating surfaces) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.2spi.com/catalog/supp/supp3a.php Wenol Metal Polish] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.amazon.com/Innovative-Products-9010-SWAB-EEZ-Industrial/dp/B004HSCMXE/ Lint-free swabs] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:26, 3 April 2014 (PDT)

* [http://www.amazon.com/Grip-Pc-Plastic-Funnel-Set/dp/B003MRN0XM/ Oil funnel] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:31, 3 April 2014 (PDT)

=Available=
'''Already at the space.'''

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Acetone. ([http://www.amazon.com/Rust-Oleum-Automotive-248667-32-Ounce-Acetone/dp/B003Y8DI4K If we need more]) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* Cleaning alcohol [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:31, 3 April 2014 (PDT)

=RoutinelyConsumed=
'''Frequently burned up in normal operation.'''

* E-Beam Emission Filament. Hopefully we can keep that item out of the 'RoutinelyConsumed' category by warming it up gently.

StereoscanSupplies

2014-04-03T22:28:02Z

Plasma: moving thing

[[Category:PA_SUPPLIES]]
[[Category:Stereoscan]]

=Wishlist=
'''Not available, but may be needed.'''

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)
** Tim G., SEM contact, says any old Viton o-ring is suitable.
** Ring measures 56mm Dia., 2.75mm thickness. [http://i.imgur.com/Yg3Knvi.jpg Source]
**
** [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:10, 1 April 2014 (PDT)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)
** Pg. 4 of the manual recommends 0.8 liters of Edwards Ultragrade 19 http://www.edwardsvacuum.com/Products/H11025015/View.aspx ($17 per. liter). [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 08:38, 2 April 2014 (PDT)

* '''IFF''' inspection indicates we need to refurbish the E2M-12 pump, we can buy a repair kit here for $110 (cheaper than from Edwards) http://www.pchemlabs.com/product.asp?pid=1896. Item number: A371-01-131. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 09:59, 2 April 2014 (PDT)

* [http://www.amazon.com/Caldrea-Lint-Cleaning-Cloths-6-Count/dp/B008KWJ0MO Lint free cloths] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* Hand lens (for detecting fibers or hair on the mating surfaces) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.2spi.com/catalog/supp/supp3a.php Wenol Metal Polish] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.amazon.com/Innovative-Products-9010-SWAB-EEZ-Industrial/dp/B004HSCMXE/ Lint-free swabs] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:26, 3 April 2014 (PDT)

=Available=
'''Already at the space.'''

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Acetone. ([http://www.amazon.com/Rust-Oleum-Automotive-248667-32-Ounce-Acetone/dp/B003Y8DI4K If we need more]) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

=RoutinelyConsumed=
'''Frequently burned up in normal operation.'''

* E-Beam Emission Filament. Hopefully we can keep that item out of the 'RoutinelyConsumed' category by warming it up gently.

StereoscanSupplies

2014-04-03T22:26:19Z

Plasma: /* Wishlist */ cleaning supplies

[[Category:PA_SUPPLIES]]
[[Category:Stereoscan]]

=Wishlist=
'''Not available, but may be needed.'''

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)
** Tim G., SEM contact, says any old Viton o-ring is suitable.
** Ring measures 56mm Dia., 2.75mm thickness. [http://i.imgur.com/Yg3Knvi.jpg Source]
**
** [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:10, 1 April 2014 (PDT)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)
** Pg. 4 of the manual recommends 0.8 liters of Edwards Ultragrade 19 http://www.edwardsvacuum.com/Products/H11025015/View.aspx ($17 per. liter). [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 08:38, 2 April 2014 (PDT)

* '''IFF''' inspection indicates we need to refurbish the E2M-12 pump, we can buy a repair kit here for $110 (cheaper than from Edwards) http://www.pchemlabs.com/product.asp?pid=1896. Item number: A371-01-131. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 09:59, 2 April 2014 (PDT)

* [http://www.amazon.com/Rust-Oleum-Automotive-248667-32-Ounce-Acetone/dp/B003Y8DI4K Acetone] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.amazon.com/Caldrea-Lint-Cleaning-Cloths-6-Count/dp/B008KWJ0MO Lint free cloths] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* Hand lens (for detecting fibers or hair on the mating surfaces) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.2spi.com/catalog/supp/supp3a.php Wenol Metal Polish] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.amazon.com/Innovative-Products-9010-SWAB-EEZ-Industrial/dp/B004HSCMXE/ Lint-free swabs] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:26, 3 April 2014 (PDT)

=Available=
'''Already at the space.'''

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

=RoutinelyConsumed=
'''Frequently burned up in normal operation.'''

* E-Beam Emission Filament. Hopefully we can keep that item out of the 'RoutinelyConsumed' category by warming it up gently.

StereoscanSupplies

2014-04-03T22:21:49Z

Plasma: /* Wishlist */ cleaning supplies

[[Category:PA_SUPPLIES]]
[[Category:Stereoscan]]

=Wishlist=
'''Not available, but may be needed.'''

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)
** Tim G., SEM contact, says any old Viton o-ring is suitable.
** Ring measures 56mm Dia., 2.75mm thickness. [http://i.imgur.com/Yg3Knvi.jpg Source]
**
** [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:10, 1 April 2014 (PDT)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)
** Pg. 4 of the manual recommends 0.8 liters of Edwards Ultragrade 19 http://www.edwardsvacuum.com/Products/H11025015/View.aspx ($17 per. liter). [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 08:38, 2 April 2014 (PDT)

* '''IFF''' inspection indicates we need to refurbish the E2M-12 pump, we can buy a repair kit here for $110 (cheaper than from Edwards) http://www.pchemlabs.com/product.asp?pid=1896. Item number: A371-01-131. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 09:59, 2 April 2014 (PDT)

* [http://www.amazon.com/Rust-Oleum-Automotive-248667-32-Ounce-Acetone/dp/B003Y8DI4K Acetone] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.amazon.com/Caldrea-Lint-Cleaning-Cloths-6-Count/dp/B008KWJ0MO Lint free cloths] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* Hand lens (for detecting fibers or hair on the mating surfaces) [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

* [http://www.2spi.com/catalog/supp/supp3a.php Wenol Metal Polish] [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 15:21, 3 April 2014 (PDT)

=Available=
'''Already at the space.'''

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

=RoutinelyConsumed=
'''Frequently burned up in normal operation.'''

* E-Beam Emission Filament. Hopefully we can keep that item out of the 'RoutinelyConsumed' category by warming it up gently.

Stereoscan Operators Log

2014-04-02T20:07:17Z

Plasma: vacuum gauge

[[Category:Stereoscan]]

'''While repairing, maintaining, or using the Stereoscan S200 SEM, please add notes here. Newest at top.'''

* From Tim: the red vacuum gauge sticking out of the back of the chamber is a cold cathode vacuum gauge. They're pretty reliable, but it could fail to read vacuum, indicating it needs to be cleaned. [[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 13:07, 2 April 2014 (PDT)

* The following steps need to be performed on the Edwards roughing pump:

** Replace the oil
** Inspect and clean the inlet-filter
** Clean or replace the gas-ballast filters
** Clean the motor fan-cover
** Test the motor condition

Refer to pg. 38 of the user instruction manual

[[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:02, 1 April 2014 (PDT)

* Use <nowiki>~~~~</nowiki> to automatically sign edits with username, date, and time. [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 08:21, 1 April 2014 (PDT)

* March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

* March 30th: Moving complete! The SEM is now in the workshop

* March 29th: Awaiting pick-up and installation (March 29th and 30th).

* March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

StereoscanSupplies

2014-04-02T17:00:28Z

Plasma: /* Wishlist */ added item number

StereoscanSupplies

2014-04-02T16:59:33Z

Plasma: /* Wishlist */ link for repair kit

Category:Stereoscan

2014-04-02T15:40:50Z

Plasma: /* More Photos */ Added and organized photos

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

Cleaning and assessment in progress.

See [[Stereoscan_Operators_Log]] for details.

=Documentation=

== Original ==

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* [http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf Edwards E2M-12 roughing pump user instruction manual]

==757 Labs==

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

* http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only]) ([https://web.archive.org/web/20140401150504/http://757labs.org/wiki/Projects/SEM Internet Archive])

* http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

==Additional Resources==

* The original S200 operating instructions are available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

==More Photos==

* [https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html SEM install and overview]

* [http://imgur.com/a/uR7Yv#0 Close-ups of assembly and components]

* [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Cleaning and vacuum components]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

[[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) Custom electronic control replacement circuitry.

[[User:Plasma|Plasma]] Dan K., plasma on IRC. SEM information, documentation, repair information, problems

StereoscanSupplies

2014-04-02T15:38:06Z

Plasma: /* Wishlist */

Category:Stereoscan

2014-04-02T06:13:27Z

Plasma: /* Current Status */ Clarified status

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

Cleaning and assessment in progress.

See [[Stereoscan_Operators_Log]] for details.

=Documentation=

== Original ==

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* [http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf Edwards E2M-12 roughing pump user instruction manual]

==757 Labs==

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

* http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only]) ([https://web.archive.org/web/20140401150504/http://757labs.org/wiki/Projects/SEM Internet Archive])

* http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

==Additional Resources==

* The original S200 operating instructions are available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

==More Photos==

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

[[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) Custom electronic control replacement circuitry.

[[User:Plasma|Plasma]] Dan K., plasma on IRC. SEM information, documentation, repair information, problems

Category:Stereoscan

2014-04-02T06:11:59Z

Plasma: /* Additional Resources */ update to manual availability

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

In Progress.

See [[Stereoscan_Operators_Log]] for details.

=Documentation=

== Original ==

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* [http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf Edwards E2M-12 roughing pump user instruction manual]

==757 Labs==

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

* http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only]) ([https://web.archive.org/web/20140401150504/http://757labs.org/wiki/Projects/SEM Internet Archive])

* http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

==Additional Resources==

* The original S200 operating instructions are available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

==More Photos==

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

[[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) Custom electronic control replacement circuitry.

[[User:Plasma|Plasma]] Dan K., plasma on IRC. SEM information, documentation, repair information, problems

StereoscanSupplies

2014-04-02T06:10:58Z

Plasma: /* Wishlist */ O ring update

StereoscanSupplies

2014-04-02T06:04:51Z

Plasma: /* Wishlist */ whitespace

StereoscanSupplies

2014-04-02T06:03:57Z

Plasma: /* Wishlist */ oil for pump

Stereoscan Operators Log

2014-04-02T06:02:09Z

Plasma: adding steps for pump reconditioning

[[Category:Stereoscan]]

'''While repairing, maintaining, or using the Stereoscan S200 SEM, please add notes here. Newest at top.'''

* The following steps need to be performed on the Edwards roughing pump:

** Replace the oil
** Inspect and clean the inlet-filter
** Clean or replace the gas-ballast filters
** Clean the motor fan-cover
** Test the motor condition

Refer to pg. 38 of the user instruction manual

[[User:Plasma|Plasma]] ([[User talk:Plasma|talk]]) 23:02, 1 April 2014 (PDT)

* Use <nowiki>~~~~</nowiki> to automatically sign edits with username, date, and time. [[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) 08:21, 1 April 2014 (PDT)

* March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

* March 30th: Moving complete! The SEM is now in the workshop

* March 29th: Awaiting pick-up and installation (March 29th and 30th).

* March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

Category:Stereoscan

2014-04-02T05:57:30Z

Plasma: /* Original */ adding pump docs

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

In Progress.

See [[Stereoscan_Operators_Log]] for details.

=Documentation=

== Original ==

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* [http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf Edwards E2M-12 roughing pump user instruction manual]

==757 Labs==

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

* http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only]) ([https://web.archive.org/web/20140401150504/http://757labs.org/wiki/Projects/SEM Internet Archive])

* http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

==Additional Resources==

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

==More Photos==

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

[[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) Custom electronic control replacement circuitry.

[[User:Plasma|Plasma]] Dan K., plasma on IRC. SEM information, documentation, repair information, problems

Category:Stereoscan

2014-04-02T05:56:39Z

Plasma: /* Contacts */ Adding myself as a general contact

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

In Progress.

See [[Stereoscan_Operators_Log]] for details.

=Documentation=

== Original ==

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

==757 Labs==

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

* http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only]) ([https://web.archive.org/web/20140401150504/http://757labs.org/wiki/Projects/SEM Internet Archive])

* http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

==Additional Resources==

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

==More Photos==

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

[[User:Mirage335|Mirage335]] ([[User talk:Mirage335|talk]]) Custom electronic control replacement circuitry.

[[User:Plasma|Plasma]] Dan K., plasma on IRC. SEM information, documentation, repair information, problems

Stereoscan

2014-04-02T05:54:26Z

Plasma: /* Contacts */ adding myself as a general contact

[[Category:Obsolete]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Documentation=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* Edwards E2M-12 roughing pump user instruction manual: http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

* Dan K. (plasma on IRC): SEM information, documentation, repair information, problems

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-04-02T05:52:55Z

Plasma: /* Useful information */ roughing pump manual

[[Category:Obsolete]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Documentation=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

* Edwards E2M-12 roughing pump user instruction manual: http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-04-02T05:51:36Z

Plasma: /* Supplies wishlist */ oil

[[Category:Obsolete]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-04-01T13:40:41Z

Plasma: /* Current Status */ turbo pump

[[Category:Stereoscan]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-04-01T04:01:34Z

Plasma: Changing category from equipment to stereoscan

[[Category:Stereoscan]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* Oil diffusion pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-04-01T03:40:44Z

Plasma: /* Current Status */ Update to status

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K.

* Oil diffusion pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.

* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)

* Compressed air needed to get more dust out

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-03-31T16:21:01Z

Plasma: /* Current Status */ test edit

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 30th: Moving complete! The SEM is now in the workshop

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g).

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

=More Photos=

* http://imgur.com/a/uR7Yv#0

* https://dl.dropboxusercontent.com/u/45972/sem/sem_install/index.html

Stereoscan

2014-03-31T15:07:03Z

Plasma: /* Resources */ typo

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 30th: Moving complete! The SEM is now in the workshop.

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g).

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

Stereoscan

2014-03-31T15:05:26Z

Plasma: /* Resources */ typo

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 30th: Moving complete! The SEM is now in the workshop.

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [[http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS|http://www.parker.com]]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g).

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

Stereoscan

2014-03-31T15:03:27Z

Plasma: /* Resources */ more

[[Category:Equipment]]
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 30th: Moving complete! The SEM is now in the workshop.

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

* The original S200 operating instructions will be available at the space in a three-ring binder near the machine.

* If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

* O-ring supplier: [http://www.parker.com/portal/site/PARKER/menuitem.7100150cebe5bbc2d6806710237ad1ca/?vgnextoid=f5c9b5bbec622110VgnVCM10000032a71dacRCRD&vgnextfmt=default&vgnextcatid=7394760&vgnextcat=O-RING%20PRODUCTS%20-%20NORTH%20AMERICA&Wtky=O-RINGS|http://www.parker.com]

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g).

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

Stereoscan

2014-03-31T04:37:42Z

Plasma: Resources and supplies

[[Category:Equipment]]
HacDC is in the process of obtaining a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 30th: Moving complete! The SEM is now in the workshop.

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

The original S200 operating instructions will be available at the space in a three-ring binder near the machine. If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

* SPI supplies: http://www.2spi.com

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

=Supplies wishlist=

* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g).

* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)

Stereoscan

2014-03-31T00:30:34Z

Plasma: Updated status

[[Category:Equipment]]
HacDC is in the process of obtaining a scanning electron microscope: a Cambridge Stereoscan 200.

[[File:SEM_install_1_thumb.jpg|right|SEM in workshop]]

=Current Status=

March 30th: Moving complete! The SEM is now in the workshop.

March 29th: Awaiting pick-up and installation (March 29th and 30th).

March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

The original S200 operating instructions will be available at the space in a three-ring binder near the machine. If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

File:SEM install 1 thumb.jpg

2014-03-31T00:28:46Z

Plasma: Thumbnail: The SEM as it appeared on March 30th, 2014, after a Herculean moving effort.

Thumbnail: The SEM as it appeared on March 30th, 2014, after a Herculean moving effort.

File:SEM install 1.jpg

2014-03-31T00:26:23Z

Plasma: The SEM as it appeared on March 30th, 2014, after a Herculean moving effort.

The SEM as it appeared on March 30th, 2014, after a Herculean moving effort.

Stereoscan

2014-03-29T20:03:14Z

Plasma: /* Current Status */ Update to status

[[Category:Equipment]]
HacDC is in the process of obtaining a scanning electron microscope: a Cambridge Stereoscan 200.

=Current Status=

Awaiting pick-up and installation (March 29th and 30th).

A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

The original S200 operating instructions will be available at the space in a three-ring binder near the machine. If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

Stereoscan

2014-03-17T04:20:43Z

Plasma: Initial write-up

[[Category:Equipment]]
HacDC is in the process of obtaining a scanning electron microscope: a Cambridge Stereoscan 200.

=Current Status=

Awaiting pick-up and installation (March 23rd?).

A space needs to be cleared out in the workshop!

=Maintenance Information=

Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:

# http://757labs.org/2012/09/scanning-electron-microscope-update/ ([http://pastebin.com/hSiu4Urs archival link -- text only])

# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only])

=Useful information=

* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions]

* [https://dl.dropboxusercontent.com/u/45972/s200.zip S200 operating instructions (2 MB zip)]

=Resources=

The original S200 operating instructions will be available at the space in a three-ring binder near the machine. If possible, members will also have access to a PDF copy of ''Scanning Electron Microscopy - A Student's Handbook'', 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

=Contacts=

We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

Prusa Mendel Documentation

2013-04-07T22:58:51Z

Plasma:

[[Category:PrusaMendel]]
[[Category:RepRap]]

This is the page on how to use the newly built Prusa Mendel (iteration 2). A PC has been dedicated to run it, below you will find the toolchain used to run it and other details that you may find useful. [[File:HacDCprusaMendel2013-02-11.jpg|500px|right]]

=Current Machine Status=

'''Operational'''

=Workflow=

CAD/Thingiverse -> Netfabb -> STL -> Slic3r -> Pronterface -> PRINT!

See operation section for a tutorial.

;CAD
: FreeCAD (free, open source) and SolidWorks (expensive, some extra features) offer intuitive sketch and constraint based modeling.
: OpenSCAD uses programming code to describe 3D models.
: And in case you don't want to model anything and simply want to print stuff, go to [http://www.thingiverse.com Thingiverse].

;Netfabb
: software for checking the "3D printability" of the model you created. Go to [http://www.netfabb.com Netfabb] and download the Studio Basic option. You can also simply use their cloud offering and have a repaired model emailed back to you.
: if your model has issues, run the repair function with default settings and see if that remedies the issues. The repair function can be used by clicking the "first aid" symbol found at the far right on the tool bar.

; STL
: current format for 3D printing (AMF is coming around the corner).
: at this point, your file should be patched up and ready to print.

;Slic3r
: software for creating 3d printing toolpaths
: precompiled binaries can be had from [http://www.slic3r.org Slic3r.org] or be built built from [https://github.com/alexrj/Slic3r github].
: use the profiles already generated for best results.

;Pronterface
: GUI for controlling the Prusa.
: where you will connect to the printer, home, warm up and send print jobs from.
: can be built from [https://github.com/kliment/Printrun github] or download precompiled binaries for Windows/Mac [http://koti.kapsi.fi/%7Ekliment/printrun/ here].
: preview G-Code generated by Slic3r.

;Print
: File is good to go, toolpaths are generated, time to let the robot do what it does best, PRINT!

=Materials=
* PLA - Polylactic Acid
: Extremely ecologically friendly, made from corn starch, smells like waffles/syrup while printing.
: Needs a fan for parts with overhang/bridging.
: Low operating temperature (160C-200C).

* ABS
: UNSUPPORTED, WILL DAMAGE PRINTER. Used by old makerbot.

=Maintenance=
==Safety - ALWAYS CHECK==
*Power Supply. NEVER leave ATX power supply on after leaving HacDC, it gets hot.
*Loose wires. Short circuits can cause severe damage.
*Lose bolts. In particular, check the endstop bolts.
*X/Y endstops. Manually push X/Y axes to test the switches.
*Z-axis endstop. Visually check that it will trigger before severe crash into print bed.

==Malfunction==
*Grease smooth rods and Z-Axis threaded rod if axes show signs of binding.
*Only grease with PTFE SuperLube, kept at HacDC next to RepRap.
*Floss the hobbed bolt in the extruder.

==Bed Cleaning==
*Polycarbonate bed should be kept flat, without excessive protrusions. Scrape excess plastic off, and trim deep cuts.
*Glass bed must be clean, but not too clean. Best practice seems to be wiping with a paper towel, and then gently brushing dry fingers across the glass.
*It's been posited by eryc on IRC that you do NOT want to run your fingers over the glass. Instead, the glass bed should be dry, clean, and affixed with blue tape. This apparently gives a far better surface for adherence than bare glass.

==Print Depth==
*First-layer depth. For polycarbonate beds, this must be <0.4mm below the bed surface. For glass bed, exactly 0.2mm above the bed surface is required. These distances can be measured in pronterface, by homing the Z-axis, then commanding Z-axis movement in 0.1mm increments.
*Z-axis height. Z-axis endstop position sets depth for entire bed.
*Z-axis level. The dual threaded rods must be kept aligned.
*Bed leveling. Place Z-axis just above bed, then move X/Y axes. Place thin paper strips under bed until level.

=Tips=
*Some problems may be ambient temperature related. When the room is 52F (11C), plastic curling, extruder jams, and Z-axis endstop malfunction are more likely. Placing a space heater on medium heat (~750W) at least four feet from the RepRap helps. Usual concerns about space heaters apply, be safe.
*Leave fans at "Low" setting. Higher settings are rarely helpful, and usually blow the plastic away.
*Warping or excessive adhesion on polycarbonate bed may be improved with paper tape and temperatures >45C.

=Operation=
#Emergency Stop. Be ready to unplug USB cable when beginning X/Y/Z motion.
#Go through the maintenance list as necessary, especially the safety section.
#Check which bed you are using. Polycarbonate (lexan) bed is strongly recommended.
#Turn on power strip. Switch on the ATX PSU behind the machine. Large fans should start spinning.
#Load an STL model onto the dedicated laptop for printing. If you haven't made one, download one from [http://www.thingiverse.com/ Thingiverse].
#Clean the STL model with [http://cloud.netfabb.com/ netfabb]. Alternatively, use netfabb studio basic to clean the model manually.
#Open Slic3r. Drag your STL file from a file manager onto the "Drag your objects here" box in Slic3r.
#"Print settings: Cheap" "Filament: Solid" "Printer: HacDC" Use these settings to print fast, with minimal plastic, high strength, and reasonable droop on short bridges.
#Export G-Code in Slic3r. This can take a while, so proceed to the next steps without waiting.
#Open pronterface.
#Connect to the printer. Check box "Watch" to see temperature readings. You should see about 20C on all temperature sensors, and basic stats in the console window.
#Set heated bed to 45C.
#Wait for Slic3r to finish. Click "Load" and load the G-Code file you have created. A preview of the first layer should appear in the middle of Pronterface. You can click on the preview and walk through the layers by holding shift and scrolling on the trackpad. In the console, a time estimate for the print should also appear.
#Set extrusion heater to 185C.
#Extrusion rate in pronterface should be 50mm/min or less. Faster speeds while priming can grind filament.
#Wait for it to hit temp and prime it. You can do this by either manually turning the large extruder gear or pressing the "Extrude" button. Do so until there is a nice and steady flow.
#Once all temps are hit and stable, file is loaded and extruder is primed...you can now hit print!
#Sit back and watch as the printer homes itself and sprints off to print your file!

==Replacing filament/changing spools==

#Turn on the printer, open pronterface, and connect to the printer (instructions above)
#If there is filament sticking out of the top of the extruder, you'll need to remove it
#Set the hotend temperature (175-185 degrees Celsius for PLA)
#When extruder is warmed up, raise the extruder (+z axis) so it's not touching the bed
#Click the reverse button while gently pulling upwards on the filament you wish to remove (You may increase the feed speed from 50mm/min to something higher to make this process quicker)
#Continue gently pulling and pressing reverse until the remaining filament is drawn out from the top of the extruder housing
#Once the filament has been removed, replace the spool
#Feed the new filament into the appropriate hole in the extruder housing
#Gently press down on the filament while clicking "extrude" in pronterface. The extruder should grab the filament as you feed it
#Repeat the previous step until you see the new material being extruded from the tip

=Please Avoid=
You are adding to the workload on a shared machine. Please be gentle.
*NEVER leave ATX power supply on after leaving HacDC, it gets hot.
*Extrusion rate in pronterface above 50mm/min grinds filament, and may wear out the extruder bolt.
*Printing faster than 65mm/s and non-print moves above 100mm/s incur excessive stress.
*Manually moving Z-axis threaded rods delevels machine, which takes time to fix.
*Raw polycarbonate bed above 45C will have extremely strong adhesion. Even if you can remove your part, you will likely warp the bed doing so.
*Paper/kapton tape defiles the glass bed. Use tape only on polycarbonate bed.

=Slic3r Settings=

==Print Settings==
===Cheap===
'''Default''' Fast, minimum material use. Virtually all parts will not benefit from the other settings.
===Cautious===
Same as cheap, reduced speed. Some artistic parts with thin walls will benefit.
===Thin===
Very low speed, nominal layer height, extra perimeters. Intended for extreme non-structural (artistic) components.
===Robust===
Solid, faithful parts. Use only for engineering parts requiring extreme strength (>10kg force across a few square millimeters).
Voraciously consumes plastic, please use only if warranted.
==FilamentSettings==
===Solid===
185C Extrusion Temperature. Maximizes strength. Bridges >~3mm will droop badly.
===Compromise===
175C Extrusion Temperature. Balances strength with better bridging.
===BridgeSafe===
167C Extrusion Temperature. Can pass the [http://www.thingiverse.com/thing:12925 bridge test]. Reduced mechanical strength, best for artistic parts.
==Printer Settings==
Leave at "HacDC" unless you feel they need debugging.

=Advanced=
Entire software load used on dedicated laptop available at [https://github.com/HacDC/PrusaMendel github]. With these files, one can use their own computer to control the reprap.

=Credits=
{| class="wikitable"
|-
|digifab
|Constructed and donated working PrusaMendel Reprap.
|-
|juri
|Consultation on maintenance and emergency PSU replacement.
|}
*Several HacDC members for finance.
*Others.

=Technical Specs=

This Prusa is fitted with the following:

* Melzi - loaded with the latest Marlin firmware (as of 9/1/2012)
* 12V 30A PSU
* Makergear 0.35mm for 3mm filament hot end
* LM8UUs
* GT2 (2mm) belting and pulleys (5mm bore, 20 tooth)
* 100K Thermistors (extruder an heated bed)

For FW reference on steps per axis: (80, 80, 2560, 666.67) {X, Y, Z, E}, this is also assuming 1/16th microstepping.

=To Do=
* Tune trimpots on motor drivers
* More Cable Management (Spiral wrap loose wires and ziptie down)
* Add some example printouts to the wiki.
* Print spare parts.
* Support KISSlicer for improved dimension accuracy in some cases.
* Experiment further with extrusion width settings, particularly perimeter widths.

=Known Bugs=
* Model holes will print the wrong size. The proper way to manage this is by keeping about 1.5mm per wall or 3mm diameter clearance in CAD models.

=Additional Resources=
* "Slic3r is Nicer - Part 1 - Settings and Extruder Calibration" http://richrap.blogspot.co.uk/2012/01/slic3r-is-nicer-part-1-settings-and.html
* A guide to calibrating and using slic3r: https://github.com/alexrj/Slic3r/wiki/Calibration

Prusa Mendel Documentation

2013-04-07T22:57:24Z

Plasma: /* Bed Cleaning */

Prusa Mendel Operators Log

2013-04-07T05:24:14Z

Plasma:

[[Category:PrusaMendel]]
'''When you use the Prusa Mendel, please add notes here. Newest at top.'''

* Started to print again after previous issue, and about 30 minutes in drive gear for the extruder chipped, resulting in flecks of red plastic. This led to the larger extruder gear skipping and making a clicking noise. I was able to pause the printer within a few seconds of this occurring. The drive gear now appears damaged and the teeth-skipping problem persists. Settings at the time were 50mm/min. feed rate, recommended slid3r profiles, 175*C extruder temperature, green PLA, 45*C bed temperature. The print was progressing as expected up until that point. (plasma_ 2013-04-07)
* Started a print of my own case. With help from eryc and haxwithaxe on IRC, discovered that the fans were causing rippling. Also noted that the PLA is low. Replaced white PLA spool with green. (plasma_ 2013-04-07)
* Printed first piece of my own design. (filter holder for a spectrometer) Printer worked well. Had minor non-stick problem on first layer, but nothing significant. (gatohaus 2013-03-17)
Check whether extruder is sufficiently close to polycarbonate bed. If all else fails (or you don't mind the extra work), just use paper tape. (mirage335)
:* Thanks. And after inspecting the piece and reinspecting the model, I found something I don't understand. [[Image:3DP PELstand printed gatohaus.jpg|200px|right]] The top slots were supposed to be 14mm wide, but they're 11mm. All other dimensions came out fine. I re-checked the model and the STL file in 2 programs, all show the slot as 14mm wide. ??? (gatohaus)
Slic3r sometimes creates perimeters inwards, changing the dimensions of such gaps. The best way to solve this is to adjust the model. If that is not an option, you can reduce "Vertical shells -> Perimeters" to 1, reducing the error. Failing that, printing "Robust" will use no perimeters and solid infill - at the cost of extreme plastic consumption. (mirage335)

* Printer has been working quite well again for a while now. (mirage335, 2013-03-11)

* Been a while. Attempted to print an untested guitar pick model on poly bed, it failed. Switched to trying the old reliable dodecahedron, but it failed similarly. The nozzle was draggin trhough the layers and smushing everything around. Had a print head/print bed collision that unseated the z axis from it's nuts, attempted to re-level the z axis, and I think I did ok. Switched to glass bed, and definitely had less squishing, but the first layer wouldn't stick... I need help. (xaqrox, 2013-02-18)
Sounds like you successfully dealt with some [http://wiki.hacdc.org/index.php/PrusaMendel#Print_Depth print depth issues] and then switched to glass bed. However, the glass bed is finicky about cleanliness, so try again with the polycarbonate bed. Failing that, try paper tape on the polycarbonate bed. (mirage335)

* New software load added to dedicated laptop. Wiki and machinery fully harmonized, efficiency and performance maximized. (mirage335, 2013-02-11)

* Found PSU switched on. (mirage335, 2013-02-07)

* Printed part of an [http://www.thingiverse.com/thing:36321 earbud holder]. Print quality was great--no problems at all. (myersjustinc, 2013-02-04)

* Proper spool mounting system and Z-axis constraints added. Print quality vastly improved. (mirage335, 2013-02-04)

* Attempted to print UCK (universal connector kit) lego to krinkle block adapter with great difficulty due to stl weirdness. printed a whistle instead. it was uneventful. i had the fans peeled back though so i got a bit of droop on the primary hole and the speed (what was it) was a bit fast so it wasn't very tight. (haxwithaxe, 2012-01-23)

* Some problems may be ambient temperature related. When the room is 52F (11C), plastic curling, extruder jams, and Z-axis endstop malfunction are more likely. Placing a space heater on medium heat (~750W) at least four feet from the RepRap helps. Usual concerns about space heaters apply, be safe. (mirage335, 12-31-2012)

* Found loose bolts on end stops. Tightening the bolts and greasing part of the Z-axis endstop switch resolved previously mentioned homing issue. (mirage335, 12-28-2012)

* Machine needed grease. Donated [http://reprap.org/wiki/Lubrication officially recommended grease]. Re-greased linear bearings and Z-axis threaded rods. (mirage335, 12-24-2012)

* Z-axis end stop occasionally deviates from its typical 'double click' homing. This puts it too far above the printbed. Fortunately, this occurs rarely, and may be a software glitch. The workaround is to restart the print job until it works correctly. (mirage335, 12-23-2012)

* Polycarbonate beds provided for RepRap. Glass bed still available. First layer adhesion vastly improved, bed leveling issues now far less critical. Enables easy printing of large (180x180mm) parts. Spare polycarbonate beds are exist, so users need not be too concerned about fouling. Paper tape may be used if necessary. (mirage335)

* Thin paper provided for leveling. Place small strips under print bed to adjust height. (mirage335)

* Existing power supply spontaneously failed in the middle of a job. Cautiously wired up new ATX 12V power supply, with help from juri_ . Also added 120mm fans, with cable ties (semi-permanent attachment) and gator clamps (to allow swinging the fans out of the way). Finally, achieved successful [http://www.thingiverse.com/thing:12925 bridge tests], finding lower extrusion temperatures (165C vs 185C) improved print quality. (mirage335, 11-19-2012)

* A user found the PLA filament almost entirely used up.

* The Z-axis endstop has been moving slightly downward every time it is used. (mirage335)

* Found printer bed deleveled again. Releveled, and now machine is happy-go-lucky. (mirage335)

* Found the glass detached from the heater bed, Z-axis badly askew, and Z-axis end-stop repositioned. Performance degraded to worse than the old makerbot, but was repaired after much wasted plastic and lost time. Also added paper tape to front of printing bed for safety. (mirage335, 9-23-2012)

* Vastly better printing than makerbot. High precision, fast, easy to use, configurable. Extreme objects were tested successfully. (mirage335)

Most ''minor glitches'' were on account of provided USB ''fan''. Overhang is best reduced by filleting[http://en.wikipedia.org/wiki/Fillet_(mechanics)] sharp edges and placing fan a few inches from to printer. However, strong wind may cause unusually tall and thin parts (ie. pencil-like) to print crooked; the fan should be placed at least a foot away in these cases. Fan itself should be externally powered, unplugging it from the laptop USB port disconnects the printer. Unplugging other devices (USB sticks) has no effect. Fan must rest on high-friction (eg. rubber) surface, or will slowly blow itself away. (mirage335, 9-15-2012)

Prusa Mendel Documentation

2013-04-07T04:45:05Z

Plasma: /* Replacing filament/changing spools */

[[Category:PrusaMendel]]
[[Category:RepRap]]

This is the page on how to use the newly built Prusa Mendel (iteration 2). A PC has been dedicated to run it, below you will find the toolchain used to run it and other details that you may find useful. [[File:HacDCprusaMendel2013-02-11.jpg|500px|right]]

=Current Machine Status=

'''Operational'''

=Workflow=

CAD/Thingiverse -> Netfabb -> STL -> Slic3r -> Pronterface -> PRINT!

See operation section for a tutorial.

;CAD
: FreeCAD (free, open source) and SolidWorks (expensive, some extra features) offer intuitive sketch and constraint based modeling.
: OpenSCAD uses programming code to describe 3D models.
: And in case you don't want to model anything and simply want to print stuff, go to [http://www.thingiverse.com Thingiverse].

;Netfabb
: software for checking the "3D printability" of the model you created. Go to [http://www.netfabb.com Netfabb] and download the Studio Basic option. You can also simply use their cloud offering and have a repaired model emailed back to you.
: if your model has issues, run the repair function with default settings and see if that remedies the issues. The repair function can be used by clicking the "first aid" symbol found at the far right on the tool bar.

; STL
: current format for 3D printing (AMF is coming around the corner).
: at this point, your file should be patched up and ready to print.

;Slic3r
: software for creating 3d printing toolpaths
: precompiled binaries can be had from [http://www.slic3r.org Slic3r.org] or be built built from [https://github.com/alexrj/Slic3r github].
: use the profiles already generated for best results.

;Pronterface
: GUI for controlling the Prusa.
: where you will connect to the printer, home, warm up and send print jobs from.
: can be built from [https://github.com/kliment/Printrun github] or download precompiled binaries for Windows/Mac [http://koti.kapsi.fi/%7Ekliment/printrun/ here].
: preview G-Code generated by Slic3r.

;Print
: File is good to go, toolpaths are generated, time to let the robot do what it does best, PRINT!

=Materials=
* PLA - Polylactic Acid
: Extremely ecologically friendly, made from corn starch, smells like waffles/syrup while printing.
: Needs a fan for parts with overhang/bridging.
: Low operating temperature (160C-200C).

* ABS
: UNSUPPORTED, WILL DAMAGE PRINTER. Used by old makerbot.

=Maintenance=
==Safety - ALWAYS CHECK==
*Power Supply. NEVER leave ATX power supply on after leaving HacDC, it gets hot.
*Loose wires. Short circuits can cause severe damage.
*Lose bolts. In particular, check the endstop bolts.
*X/Y endstops. Manually push X/Y axes to test the switches.
*Z-axis endstop. Visually check that it will trigger before severe crash into print bed.

==Malfunction==
*Grease smooth rods and Z-Axis threaded rod if axes show signs of binding.
*Only grease with PTFE SuperLube, kept at HacDC next to RepRap.
*Floss the hobbed bolt in the extruder.

==Bed Cleaning==
*Polycarbonate bed should be kept flat, without excessive protrusions. Scrape excess plastic off, and trim deep cuts.
*Glass bed must be clean, but not too clean. Best practice seems to be wiping with a paper towel, and then gently brushing dry fingers across the glass.

==Print Depth==
*First-layer depth. For polycarbonate beds, this must be <0.4mm below the bed surface. For glass bed, exactly 0.2mm above the bed surface is required. These distances can be measured in pronterface, by homing the Z-axis, then commanding Z-axis movement in 0.1mm increments.
*Z-axis height. Z-axis endstop position sets depth for entire bed.
*Z-axis level. The dual threaded rods must be kept aligned.
*Bed leveling. Place Z-axis just above bed, then move X/Y axes. Place thin paper strips under bed until level.

=Tips=
*Some problems may be ambient temperature related. When the room is 52F (11C), plastic curling, extruder jams, and Z-axis endstop malfunction are more likely. Placing a space heater on medium heat (~750W) at least four feet from the RepRap helps. Usual concerns about space heaters apply, be safe.
*Leave fans at "Low" setting. Higher settings are rarely helpful, and usually blow the plastic away.
*Warping or excessive adhesion on polycarbonate bed may be improved with paper tape and temperatures >45C.

=Operation=
#Emergency Stop. Be ready to unplug USB cable when beginning X/Y/Z motion.
#Go through the maintenance list as necessary, especially the safety section.
#Check which bed you are using. Polycarbonate (lexan) bed is strongly recommended.
#Turn on power strip. Switch on the ATX PSU behind the machine. Large fans should start spinning.
#Load an STL model onto the dedicated laptop for printing. If you haven't made one, download one from [http://www.thingiverse.com/ Thingiverse].
#Clean the STL model with [http://cloud.netfabb.com/ netfabb]. Alternatively, use netfabb studio basic to clean the model manually.
#Open Slic3r. Drag your STL file from a file manager onto the "Drag your objects here" box in Slic3r.
#"Print settings: Cheap" "Filament: Solid" "Printer: HacDC" Use these settings to print fast, with minimal plastic, high strength, and reasonable droop on short bridges.
#Export G-Code in Slic3r. This can take a while, so proceed to the next steps without waiting.
#Open pronterface.
#Connect to the printer. Check box "Watch" to see temperature readings. You should see about 20C on all temperature sensors, and basic stats in the console window.
#Set heated bed to 45C.
#Wait for Slic3r to finish. Click "Load" and load the G-Code file you have created. A preview of the first layer should appear in the middle of Pronterface. You can click on the preview and walk through the layers by holding shift and scrolling on the trackpad. In the console, a time estimate for the print should also appear.
#Set extrusion heater to 185C.
#Extrusion rate in pronterface should be 50mm/min or less. Faster speeds while priming can grind filament.
#Wait for it to hit temp and prime it. You can do this by either manually turning the large extruder gear or pressing the "Extrude" button. Do so until there is a nice and steady flow.
#Once all temps are hit and stable, file is loaded and extruder is primed...you can now hit print!
#Sit back and watch as the printer homes itself and sprints off to print your file!

==Replacing filament/changing spools==

#Turn on the printer, open pronterface, and connect to the printer (instructions above)
#If there is filament sticking out of the top of the extruder, you'll need to remove it
#Set the hotend temperature (175-185 degrees Celsius for PLA)
#When extruder is warmed up, raise the extruder (+z axis) so it's not touching the bed
#Click the reverse button while gently pulling upwards on the filament you wish to remove (You may increase the feed speed from 50mm/min to something higher to make this process quicker)
#Continue gently pulling and pressing reverse until the remaining filament is drawn out from the top of the extruder housing
#Once the filament has been removed, replace the spool
#Feed the new filament into the appropriate hole in the extruder housing
#Gently press down on the filament while clicking "extrude" in pronterface. The extruder should grab the filament as you feed it
#Repeat the previous step until you see the new material being extruded from the tip

=Please Avoid=
You are adding to the workload on a shared machine. Please be gentle.
*NEVER leave ATX power supply on after leaving HacDC, it gets hot.
*Extrusion rate in pronterface above 50mm/min grinds filament, and may wear out the extruder bolt.
*Printing faster than 65mm/s and non-print moves above 100mm/s incur excessive stress.
*Manually moving Z-axis threaded rods delevels machine, which takes time to fix.
*Raw polycarbonate bed above 45C will have extremely strong adhesion. Even if you can remove your part, you will likely warp the bed doing so.
*Paper/kapton tape defiles the glass bed. Use tape only on polycarbonate bed.

=Slic3r Settings=

==Print Settings==
===Cheap===
'''Default''' Fast, minimum material use. Virtually all parts will not benefit from the other settings.
===Cautious===
Same as cheap, reduced speed. Some artistic parts with thin walls will benefit.
===Thin===
Very low speed, nominal layer height, extra perimeters. Intended for extreme non-structural (artistic) components.
===Robust===
Solid, faithful parts. Use only for engineering parts requiring extreme strength (>10kg force across a few square millimeters).
Voraciously consumes plastic, please use only if warranted.
==FilamentSettings==
===Solid===
185C Extrusion Temperature. Maximizes strength. Bridges >~3mm will droop badly.
===Compromise===
175C Extrusion Temperature. Balances strength with better bridging.
===BridgeSafe===
167C Extrusion Temperature. Can pass the [http://www.thingiverse.com/thing:12925 bridge test]. Reduced mechanical strength, best for artistic parts.
==Printer Settings==
Leave at "HacDC" unless you feel they need debugging.

=Advanced=
Entire software load used on dedicated laptop available at [https://github.com/HacDC/PrusaMendel github]. With these files, one can use their own computer to control the reprap.

=Credits=
{| class="wikitable"
|-
|digifab
|Constructed and donated working PrusaMendel Reprap.
|-
|juri
|Consultation on maintenance and emergency PSU replacement.
|}
*Several HacDC members for finance.
*Others.

=Technical Specs=

This Prusa is fitted with the following:

* Melzi - loaded with the latest Marlin firmware (as of 9/1/2012)
* 12V 30A PSU
* Makergear 0.35mm for 3mm filament hot end
* LM8UUs
* GT2 (2mm) belting and pulleys (5mm bore, 20 tooth)
* 100K Thermistors (extruder an heated bed)

For FW reference on steps per axis: (80, 80, 2560, 666.67) {X, Y, Z, E}, this is also assuming 1/16th microstepping.

=To Do=
* Tune trimpots on motor drivers
* More Cable Management (Spiral wrap loose wires and ziptie down)
* Add some example printouts to the wiki.
* Print spare parts.
* Support KISSlicer for improved dimension accuracy in some cases.
* Experiment further with extrusion width settings, particularly perimeter widths.

=Known Bugs=
* Model holes will print the wrong size. The proper way to manage this is by keeping about 1.5mm per wall or 3mm diameter clearance in CAD models.

Prusa Mendel Documentation

2013-04-07T04:44:30Z

Plasma: /* Operation */

[[Category:PrusaMendel]]
[[Category:RepRap]]

This is the page on how to use the newly built Prusa Mendel (iteration 2). A PC has been dedicated to run it, below you will find the toolchain used to run it and other details that you may find useful. [[File:HacDCprusaMendel2013-02-11.jpg|500px|right]]

=Current Machine Status=

'''Operational'''

=Workflow=

CAD/Thingiverse -> Netfabb -> STL -> Slic3r -> Pronterface -> PRINT!

See operation section for a tutorial.

;CAD
: FreeCAD (free, open source) and SolidWorks (expensive, some extra features) offer intuitive sketch and constraint based modeling.
: OpenSCAD uses programming code to describe 3D models.
: And in case you don't want to model anything and simply want to print stuff, go to [http://www.thingiverse.com Thingiverse].

;Netfabb
: software for checking the "3D printability" of the model you created. Go to [http://www.netfabb.com Netfabb] and download the Studio Basic option. You can also simply use their cloud offering and have a repaired model emailed back to you.
: if your model has issues, run the repair function with default settings and see if that remedies the issues. The repair function can be used by clicking the "first aid" symbol found at the far right on the tool bar.

; STL
: current format for 3D printing (AMF is coming around the corner).
: at this point, your file should be patched up and ready to print.

;Slic3r
: software for creating 3d printing toolpaths
: precompiled binaries can be had from [http://www.slic3r.org Slic3r.org] or be built built from [https://github.com/alexrj/Slic3r github].
: use the profiles already generated for best results.

;Pronterface
: GUI for controlling the Prusa.
: where you will connect to the printer, home, warm up and send print jobs from.
: can be built from [https://github.com/kliment/Printrun github] or download precompiled binaries for Windows/Mac [http://koti.kapsi.fi/%7Ekliment/printrun/ here].
: preview G-Code generated by Slic3r.

;Print
: File is good to go, toolpaths are generated, time to let the robot do what it does best, PRINT!

=Materials=
* PLA - Polylactic Acid
: Extremely ecologically friendly, made from corn starch, smells like waffles/syrup while printing.
: Needs a fan for parts with overhang/bridging.
: Low operating temperature (160C-200C).

* ABS
: UNSUPPORTED, WILL DAMAGE PRINTER. Used by old makerbot.

=Maintenance=
==Safety - ALWAYS CHECK==
*Power Supply. NEVER leave ATX power supply on after leaving HacDC, it gets hot.
*Loose wires. Short circuits can cause severe damage.
*Lose bolts. In particular, check the endstop bolts.
*X/Y endstops. Manually push X/Y axes to test the switches.
*Z-axis endstop. Visually check that it will trigger before severe crash into print bed.

==Malfunction==
*Grease smooth rods and Z-Axis threaded rod if axes show signs of binding.
*Only grease with PTFE SuperLube, kept at HacDC next to RepRap.
*Floss the hobbed bolt in the extruder.

==Bed Cleaning==
*Polycarbonate bed should be kept flat, without excessive protrusions. Scrape excess plastic off, and trim deep cuts.
*Glass bed must be clean, but not too clean. Best practice seems to be wiping with a paper towel, and then gently brushing dry fingers across the glass.

==Print Depth==
*First-layer depth. For polycarbonate beds, this must be <0.4mm below the bed surface. For glass bed, exactly 0.2mm above the bed surface is required. These distances can be measured in pronterface, by homing the Z-axis, then commanding Z-axis movement in 0.1mm increments.
*Z-axis height. Z-axis endstop position sets depth for entire bed.
*Z-axis level. The dual threaded rods must be kept aligned.
*Bed leveling. Place Z-axis just above bed, then move X/Y axes. Place thin paper strips under bed until level.

=Tips=
*Some problems may be ambient temperature related. When the room is 52F (11C), plastic curling, extruder jams, and Z-axis endstop malfunction are more likely. Placing a space heater on medium heat (~750W) at least four feet from the RepRap helps. Usual concerns about space heaters apply, be safe.
*Leave fans at "Low" setting. Higher settings are rarely helpful, and usually blow the plastic away.
*Warping or excessive adhesion on polycarbonate bed may be improved with paper tape and temperatures >45C.

=Operation=
#Emergency Stop. Be ready to unplug USB cable when beginning X/Y/Z motion.
#Go through the maintenance list as necessary, especially the safety section.
#Check which bed you are using. Polycarbonate (lexan) bed is strongly recommended.
#Turn on power strip. Switch on the ATX PSU behind the machine. Large fans should start spinning.
#Load an STL model onto the dedicated laptop for printing. If you haven't made one, download one from [http://www.thingiverse.com/ Thingiverse].
#Clean the STL model with [http://cloud.netfabb.com/ netfabb]. Alternatively, use netfabb studio basic to clean the model manually.
#Open Slic3r. Drag your STL file from a file manager onto the "Drag your objects here" box in Slic3r.
#"Print settings: Cheap" "Filament: Solid" "Printer: HacDC" Use these settings to print fast, with minimal plastic, high strength, and reasonable droop on short bridges.
#Export G-Code in Slic3r. This can take a while, so proceed to the next steps without waiting.
#Open pronterface.
#Connect to the printer. Check box "Watch" to see temperature readings. You should see about 20C on all temperature sensors, and basic stats in the console window.
#Set heated bed to 45C.
#Wait for Slic3r to finish. Click "Load" and load the G-Code file you have created. A preview of the first layer should appear in the middle of Pronterface. You can click on the preview and walk through the layers by holding shift and scrolling on the trackpad. In the console, a time estimate for the print should also appear.
#Set extrusion heater to 185C.
#Extrusion rate in pronterface should be 50mm/min or less. Faster speeds while priming can grind filament.
#Wait for it to hit temp and prime it. You can do this by either manually turning the large extruder gear or pressing the "Extrude" button. Do so until there is a nice and steady flow.
#Once all temps are hit and stable, file is loaded and extruder is primed...you can now hit print!
#Sit back and watch as the printer homes itself and sprints off to print your file!

==Replacing filament/changing spools==

#Turn on the printer, open pronterface, and connect to the printer (instructions above)
#If there is filament sticking out of the top of the extruder, you'll need to remove it
#Set the hotend temperature (175-185 for PLA)
#When extruder is warmed up, raise the extruder (+z axis) so it's not touching the bed
#Click the reverse button while gently pulling upwards on the filament you wish to remove (You may increase the feed speed from 50mm/min to something higher to make this process quicker)
#Continue gently pulling and pressing reverse until the remaining filament is drawn out from the top of the extruder housing
#Once the filament has been removed, replace the spool
#Feed the new filament into the appropriate hole in the extruder housing
#Gently press down on the filament while clicking "extrude" in pronterface. The extruder should grab the filament as you feed it
#Repeat the previous step until you see the new material being extruded from the tip

=Please Avoid=
You are adding to the workload on a shared machine. Please be gentle.
*NEVER leave ATX power supply on after leaving HacDC, it gets hot.
*Extrusion rate in pronterface above 50mm/min grinds filament, and may wear out the extruder bolt.
*Printing faster than 65mm/s and non-print moves above 100mm/s incur excessive stress.
*Manually moving Z-axis threaded rods delevels machine, which takes time to fix.
*Raw polycarbonate bed above 45C will have extremely strong adhesion. Even if you can remove your part, you will likely warp the bed doing so.
*Paper/kapton tape defiles the glass bed. Use tape only on polycarbonate bed.

=Slic3r Settings=

==Print Settings==
===Cheap===
'''Default''' Fast, minimum material use. Virtually all parts will not benefit from the other settings.
===Cautious===
Same as cheap, reduced speed. Some artistic parts with thin walls will benefit.
===Thin===
Very low speed, nominal layer height, extra perimeters. Intended for extreme non-structural (artistic) components.
===Robust===
Solid, faithful parts. Use only for engineering parts requiring extreme strength (>10kg force across a few square millimeters).
Voraciously consumes plastic, please use only if warranted.
==FilamentSettings==
===Solid===
185C Extrusion Temperature. Maximizes strength. Bridges >~3mm will droop badly.
===Compromise===
175C Extrusion Temperature. Balances strength with better bridging.
===BridgeSafe===
167C Extrusion Temperature. Can pass the [http://www.thingiverse.com/thing:12925 bridge test]. Reduced mechanical strength, best for artistic parts.
==Printer Settings==
Leave at "HacDC" unless you feel they need debugging.

=Advanced=
Entire software load used on dedicated laptop available at [https://github.com/HacDC/PrusaMendel github]. With these files, one can use their own computer to control the reprap.

=Credits=
{| class="wikitable"
|-
|digifab
|Constructed and donated working PrusaMendel Reprap.
|-
|juri
|Consultation on maintenance and emergency PSU replacement.
|}
*Several HacDC members for finance.
*Others.

=Technical Specs=

This Prusa is fitted with the following:

* Melzi - loaded with the latest Marlin firmware (as of 9/1/2012)
* 12V 30A PSU
* Makergear 0.35mm for 3mm filament hot end
* LM8UUs
* GT2 (2mm) belting and pulleys (5mm bore, 20 tooth)
* 100K Thermistors (extruder an heated bed)

For FW reference on steps per axis: (80, 80, 2560, 666.67) {X, Y, Z, E}, this is also assuming 1/16th microstepping.

=To Do=
* Tune trimpots on motor drivers
* More Cable Management (Spiral wrap loose wires and ziptie down)
* Add some example printouts to the wiki.
* Print spare parts.
* Support KISSlicer for improved dimension accuracy in some cases.
* Experiment further with extrusion width settings, particularly perimeter widths.

=Known Bugs=
* Model holes will print the wrong size. The proper way to manage this is by keeping about 1.5mm per wall or 3mm diameter clearance in CAD models.