Reprap - Revision history

Mirage335 at 00:56, 11 March 2013

2013-03-11T00:56:22Z

← Older revision		Revision as of 00:56, 11 March 2013
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			'''OFFLINE'''
			Machine has been essentially replaced by [[PrusaMendel]].

	The reprap can be found in the workshop room, on a rolly-cart. It is driven by a computer (also on the cart) named norbert (as in the angry beavers... beavers make stuff, its logical...). To use the reprap, ssh or VNC into norbert (ask Tommy for the passwd), and run skeinforge and company from there.		The reprap can be found in the workshop room, on a rolly-cart. It is driven by a computer (also on the cart) named norbert (as in the angry beavers... beavers make stuff, its logical...). To use the reprap, ssh or VNC into norbert (ask Tommy for the passwd), and run skeinforge and company from there.

Tslagle at 15:47, 4 April 2012

2012-04-04T15:47:46Z

← Older revision		Revision as of 15:47, 4 April 2012
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	Copyright Note: The images on www.bobdbob.com I specifically cite in this page are released under the Attribution-Noncommercial 3.0 Unported (like this page), but the other content of that site is not. I'll be moving those images over to hacdc machines as soon as I determine /how/ to.		Copyright Note: The images on www.bobdbob.com I specifically cite in this page are released under the Attribution-Noncommercial 3.0 Unported (like this page), but the other content of that site is not. I'll be moving those images over to hacdc machines as soon as I determine /how/ to.


	~~[[Category:Printing]]~~
	[[Category:RepRap]]		[[Category:RepRap]]

Hexagon5un: elliot redid the hot end, so this is no longer strictly true

2011-01-13T19:00:50Z

elliot redid the hot end, so this is no longer strictly true

← Older revision		Revision as of 19:00, 13 January 2011
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	The reprap tends to shed parts as it runs. Don't leave it unattended.		The reprap tends to shed parts as it runs. Don't leave it unattended.

	Our extruder has led a rough life. You've probably noticed that its not vertical. Don't try to bend it back. Less obviously, its temperature sensor is broken. So right now, it has no thermostatic control. Repair is basically impossible, the trauma of getting to the point that the temp sensor could be replaced is so destructive that its not worth it. The newer extruder designs work much better anyway. The only problem is that it will involve getting the RS-485 stuff working.

	===To recompile the firmware===		===To recompile the firmware===

Williamgibb at 01:35, 27 December 2010

2010-12-27T01:35:21Z

← Older revision		Revision as of 01:35, 27 December 2010
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	[[Category:Printing]]		[[Category:Printing]]
			[[Category:RepRap]]

Williamgibb at 01:29, 27 December 2010

2010-12-27T01:29:41Z

← Older revision		Revision as of 01:29, 27 December 2010
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	Copyright Note: The images on www.bobdbob.com I specifically cite in this page are released under the Attribution-Noncommercial 3.0 Unported (like this page), but the other content of that site is not. I'll be moving those images over to hacdc machines as soon as I determine /how/ to.		Copyright Note: The images on www.bobdbob.com I specifically cite in this page are released under the Attribution-Noncommercial 3.0 Unported (like this page), but the other content of that site is not. I'll be moving those images over to hacdc machines as soon as I determine /how/ to.


			[[Category:Printing]]

Hexagon5un at 20:14, 28 November 2010

2010-11-28T20:14:18Z

← Older revision		Revision as of 20:14, 28 November 2010
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	Our reprap is unfortunately a bit of a mongrel. Its extruder is half-way between two normal versions, and I've made several small fixes trying to make it more reliable.		Our reprap is unfortunately a bit of a mongrel. Its extruder is half-way between two normal versions, and I've made several small fixes trying to make it more reliable.

			If you're using the RepRap, please note what you've done in the [[RepRap Operator's Log]].

	==Log into norbert:==		==Log into norbert:==

Williamgibb: /* Log into norbert: */

2010-10-23T01:09:00Z

Log into norbert:

← Older revision		Revision as of 01:09, 23 October 2010
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	that little wired network on the cart at 192.168.0.47. Plan A is to simply		that little wired network on the cart at 192.168.0.47. Plan A is to simply
	connect		connect
	to the VNC server at 192.168.0.47:1. Ask Tommy for the passwd. Plan B,		to the VNC server at 192.168.0.47:1. Ask Tommy or Will for the passwd. Plan B,
	if someone has killed norbert, is to ssh in, start the VNC server, and		if someone has killed norbert, is to ssh in, start the VNC server, and
	then proceed to plan A.		then proceed to plan A. The vnc server can be started with " vncserver -depth 24 -geometry 1024x768"

	==To render an STL file to gcode:==		==To render an STL file to gcode:==

Williamgibb: /* To render an STL file to gcode: */

2010-09-21T00:40:25Z

To render an STL file to gcode:

← Older revision		Revision as of 00:40, 21 September 2010
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	Get your stl file onto norbert with scp or something, then type the command:		Get your stl file onto norbert with scp or something, then type the command:

	<code>skeinforge foo.stl</code>		<code>skeinforge.py foo.stl</code>

	(only use the correct filename, instead of foo.stl... It'll take a while.)		(only use the correct filename, instead of foo.stl... It'll take a while.)

Tommy at 02:32, 7 July 2010

2010-07-07T02:32:14Z

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	the extruder, so the gear gets to chew on an undamaged area. It will then		the extruder, so the gear gets to chew on an undamaged area. It will then
	start moving again, and you can let go of the plastic.		start moving again, and you can let go of the plastic.

			==Local Modifications==

			We doused all the sliding rods with 3 in one oil, and polished them with a scrunge.

			===X axis belt tensioner===

			We cable-tied the end of the timing belt to a bolt, then passed that bolt through the side of the carriage, and tightened nuts to tension the belt. Slack==Lash You can /see/ the belt bounce when the motor reverses direction.

			http://www.bobdbob.com/~tjohnson/lab/20100706/thumbs/meddscn6017.jpg.jpg

			===X axis replacement pulleys===

			We also enlarged the slots the timing belt passes through. Every once in a while, slack in the belt and vibration would allow the teeth of the belt to catch on the edge of the slot. When that happened the motor stalled, and the datum is lost.

			http://www.bobdbob.com/~tjohnson/lab/20100706/thumbs/meddscn6015.jpg.jpg

			===Y Axis belt tensioner===

			Lever contraption, with a spring, to tension the belt on the inside, as opposed to a pulley pressing on the back of the belt. That is apparently extremely sub-optimal.

			http://www.bobdbob.com/~tjohnson/lab/20100706/thumbs/meddscn6022.jpg.jpg

			===Z axis===

			We removed a bunch of parts to reduce jambing, and then added retaining rings to fix the Z axis traveling nuts, instead of just sitting on them and hoping gravity is sufficient. (Its not...)

			http://www.bobdbob.com/~tjohnson/lab/20100706/thumbs/meddscn6010.jpg.jpg

			We also got a proper shaft coupler for the motor to threaded rod connection. We put the threaded rod in a drill, put a bearing around it, held the bearing with a vise and pressed a file against the rod while running the drill, to cut the threaded rod down enough to fit into the coupler. Poor-man's-Lathe. The pulley on top of the coupler is attached to the threaded rod with a set screw.

			http://www.bobdbob.com/~tjohnson/lab/20100706/thumbs/meddscn6021.jpg.jpg

			===Extruder cantilever reinforcement===

			We cemented an extra piece of plexiglass onto the bottom of the extruder's cantilever, making it significantly more rigid.

			http://www.bobdbob.com/~tjohnson/lab/20100706/thumbs/meddscn6011.jpg.jpg

			The extruder pinch wheel was also replaced with aluminum. It makes a quiet squeaking noise as it runs.

			Copyright Note: The images on www.bobdbob.com I specifically cite in this page are released under the Attribution-Noncommercial 3.0 Unported (like this page), but the other content of that site is not. I'll be moving those images over to hacdc machines as soon as I determine /how/ to.

Tommy at 02:23, 5 July 2010

2010-07-05T02:23:11Z

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