Objects - Revision history

Gippgig: probemount

2019-10-01T04:47:12Z

probemount

@@ Line 247: / Line 247: @@
 B2a=0.4; /*coupler hole asymmetry*/
 jointrodzx(L,Lc,Le,We,Wc,H,Rr,Ry,Cr,Cz,B2r,B2xy,B1r,B1x,B1z,B2a);
 module couplerrods1(L1,L2,Cr,Wr,Wh,Br,R1r,R2r) /*print with support touching buildplate & brim - object prints on side*/

Gippgig: more objects

2019-09-11T02:59:58Z

more objects

Show changes

Gippgig: test objects

2019-09-11T02:06:52Z

test objects

@@ Line 1: / Line 1: @@
 <nowiki>
-This is a collection of ImplicitCAD files for an assortment of objects. Enjoy!
+This is a collection of ImplicitCAD files for an assortment of objects. Enjoy! (Note that versions fudged for HacDC's miscalibrated Rostock & compiled .stl files are available for many of these at HacDC in the ImplicitCAD/radioshack_box directory on the renderadmin computer.)
 module box1(BT,FH,H,PL,PB,SW,TT,UL,W,WT,G,cos,sin) /*type 32*/
@@ Line 48: / Line 50: @@
 box2(BT,FH,H,PL,PB,SW,TT,UL,W,WT,G,cos,sin);
 dna.txt - Sept. 10, 2019
-dnaa.escad, rnaa.escad, etc. print schematic but fairly realistic puzzle piece-like representations of the nucleotides that make up DNA & RNA. They can be printed in various sizes; the standard size (n=1) is very roughly 20 x 25 x 12 mm while double size (n=2) is twice that. The size should not be set below n=1 but can be made as large as can be printed.  A standard size piece takes roughly 5 minutes to print making them good demonstration & test objects; print time goes up as roughly the square of the size. The following files have been prepared (all files should be printed with Platform adhesion type=None; all files with built-in support (the support parameters may need to be adjusted individually for different printers) should be printed with Support type=None; all others should be printed with Support type=Touching buildplate unless otherwise stated); the standard .escad files are below while the Rf.escad & compiled .stl files are available at HacDC in the ImplicitCAD/radioshack_box directory on the renderadmin computer:
+dnaa.escad, rnaa.escad, etc. print schematic but fairly realistic puzzle piece-like representations of the nucleotides that make up DNA & RNA. They can be printed in various sizes; the standard size (n=1) is very roughly 20 x 25 x 12 mm while double size (n=2) is twice that. The size should not be set below n=1 but can be made as large as can be printed.  A standard size piece takes roughly 5 minutes to print making them good demonstration & test objects; print time goes up as roughly the square of the size. The following files have been prepared (all files should be printed with Platform adhesion type=None; all files with built-in support (the support parameters may need to be adjusted individually for different printers) should be printed with Support type=None; all others should be printed with Support type=Touching buildplate unless otherwise stated); the standard .escad files are shown below while the Rf.escad & .stl files are available at HacDC:
 dnaa - deoxyadenosine monophosphate:
 dnaa.escad - default is double size, set n=1 for standard size
@@ Line 895: / Line 958: @@
 sd=0.7; /*support distance*/
 rnats(n,g,t,ll,lt,lh,lx,ly,k,f,tf,cg,st,sg,sd);
 </nowiki>

Gippgig at 01:34, 11 September 2019

2019-09-11T01:34:38Z

@@ Line 1: / Line 1: @@
 <nowiki>
 This is a collection of ImplicitCAD files for an assortment of objects. Enjoy!
 dna.txt - Sept. 10, 2019

Gippgig: DNA & RNA pieces

2019-09-11T01:24:03Z

DNA & RNA pieces

Show changes

Gippgig: created entry

2019-09-10T23:35:22Z

created entry

New page

<nowiki>
This is a collection of ImplicitCAD files for an assortment of objects. Enjoy!

dna.txt - July 22, 2019
dnaa.escad, rnaa.escad, etc. print schematic but fairly realistic puzzle piece-like representations of the nucleotides that make up DNA & RNA. They can be printed in various sizes; the standard size (n=1) is very roughly 20 x 25 x 12 mm while double size (n=2) is twice that. The size should not be set below n=1 but can be made as large as can be printed. A standard size piece takes roughly 5 minutes to print making them good demonstration & test objects; print time goes up as roughly the square of the size. The following files have been prepared (all files should be printed with Platform adhesion type=None; all files with built-in support (the support parameters may need to be adjusted individually for different printers) should be printed with Support type=None; all others should be printed with Support type=Touching buildplate unless otherwise stated):
dnaa - deoxyadenosine monophosphate:
dnaa.escad - default is double size, set n=1 for standard size
dnaas.escad - built-in support, default is standard, set n=2 for double size
dnaa1Rfs.escad - built-in support, standard size fudged for HacDC's miscalibrated Rostock
dnaa2Rf.escad - double size fudged for Rostock
dnaa1s.stl - standard size with built-in support
dnaa2.stl - double size
dnaa1Rfs.stl - standard size with support for Rostock
dnaa2Rf.stl - double size for Rostock
dnac - deoxycytidine monophosphate:
dnac.escad - default is double size, set n=1 for standard
dnacs.escad - with support, default is standard, set n=2 for double
dnac1Rfs.escad - standard size with support for Rostock
dnac2Rf.escad - double size for Rostock
dnac1s.stl - standard size with support
dnac2.stl - double size
dnac1Rfs.stl - standard size with support for Rostock
dnac2Rf.stl - double size for Rostock
dnag - deoxyguanosine monophosphate:
dnag.escad - no support used, print with Support type=None, default is standard size, set n=2 for double
dnag1Rf.escad - print with Support type=None, standard size for Rostock
dnag2Rf.escad - print with Support type=None, double size for Rostock
dnag1.stl - print with Support type=None, standard size
dnag2.stl - print with Support type=None, double size
dnag1Rf.stl - print with Support type=None, standard size for Rostock
dnag2Rf.stl - print with Support type=None, double size for Rostock
dnat - thymidine monophosphate:
dnat.escad - default is double size, set n=1 for standard
dnats.escad - with support, default is standard size, set n=2 for double
dnat1Rfs.escad - standard size with support for Rostock
dnat2Rf.escad - double size for Rostock
dnat1s.stl - standard size with support
dnat2.stl - double size
dnat1Rfs.stl - standard size with support for Rostock
dnat2Rf.stl - double size for Rostock
dnat1Rfs190.gcode - standard size ready-to-print gcode for Rostock, printhead temperature=190 C
dnat1Rfs195.gcode - standard size gcode for Rostock, temperature=195 C
dnat1Rfs200.gcode - standard size gcode for Rostock, temperature=200 C
dnat1Rfs205.gcode - standard size gcode for Rostock, temperature=205 C
dnat1Rfs210.gcode - standard size gcode for Rostock, temperature=210 C
dnat1Rfs215.gcode - standard size gcode for Rostock, temperature=215 C
rnaa - adenosine monophosphate:
rnaa.escad - default is double size, set n=1 for standard
rnaas.escad - with support, default is standard size, set n=2 for double
rnaa1Rfs.escad - standard size with support for Rostock
rnaa2Rf.escad - double size for Rostock
rnaa1s.stl - standard size with support
rnaa2.stl-double size
rnaa1Rfs.stl - standard size with support for Rostock
rnaa2Rf.stl - double size for Rostock
rnac - cytidine monophosphate:
rnac.escad - default is double size, set n=1 for standard
rnacs.escad - with support, default is standard size, set n=2 for double
rnac1Rfs.escad - standard size with support for Rostock
rnac2Rf.escad - double size for Rostock
rnac1s.stl - standard size with support
rnac2.stl - double size
rnac1Rfs.stl - standard size with support for Rostock
rnac2Rf.stl - double size for Rostock
rnag - guanosine monophosphate:
rnag.escad - no support used, print with Support type=None, default is standard size, set n=2 for double
rnag1Rf.escad - print with Support type=None, standard size for Rostock
rnag2Rf.escad - print with Support type=None, double size for Rostock
rnag1.stl - print with Support type=None, standard size
rnag2.stl - print with Support type=None, double size
rnag1Rf.stl - print with Support type=None, standard size for Rostock
rnag2Rf.stl - print with Support type=None, double size for Rostock
rnau - uridine monophosphate:
rnau.escad - default is double size, set n=1 for standard
rnaus.escad - with support, default is standard size, set n=2 for double
rnau1Rfs.escad - standard size with support for Rostock
rnau2Rf.escad - double size for Rostock
rnau1s.stl - standard size with support
rnau2.stl - double size
rnau1Rfs.stl - standard size with support for Rostock
rnau2Rf.stl - double size for Rostock
Modified bases:
rnat - ribosylthymine monophosphate:
rnat.escad - default is double size, set n=1 for standard
rnats.escad - with support, default is standard size, set n=2 for double
rnat1Rfs.escad - standard size with support for Rostock
rnat2Rf.escad - double size for Rostock
rnat1s.stl - standard size with support
rnat2.stl - double size
rnat1Rfs.stl - standard size with support for Rostock
rnat2Rf.stl - double size for Rostock
rnapsu - pseudouridine monophosphate:
rnapsu.escad - default is double size, set n=1 for standard
rnapsus.escad - with support, default is standard size,set n=2 for double
rnapsu1Rfs.escad - standard size with support for Rostock
rnapsu2Rf.escad - double size for Rostock
rnapsu1s.stl - standard size with support
rnapsu2.stl - double size
rnapsu1Rfs.stl - standard size with support for Rostock
rnapsu2Rf.stl - double size for Rostock
rnai - inosine monophosphate:
rnai.escad - default is double size, set n=1 for standard
rnais.escad - with support, default is standard size, set n=2 for double
rnai1Rfs.escad - standard size with support for Rostock
rnai2Rf.escad - double size for Rostock
rnai1s.stl - standard size with support
rnai2.stl - double size
rnai1Rfs.stl - standard size with support for Rostock
rnai2Rf.stl - double size for Rostock
rnam1i - 1-methylinosine monophosphate
rnam1i.escad - default is double size, set n=1 for standard
rnam1is.escad - with support, default is standard size, set n=2 for double
rnam1i1Rfs.escad - standard size with support for Rostock
rnam1i2Rf.escad - double size for Rostock
rnam1i1s.stl - standard size with support
rnam1i2.stl - double size
rnam1i1Rfs.stl - standard size with support for Rostock
rnam1i2Rf.stl - double size for Rostock
rnacm - 2'-O-methylcytidine monophosphate:
rnacm.escad - default is double size, set n=1 for standard
rnacms.escad - with support, default is standard size, set n=2 for double
rnacm1Rfs.escad - standard size with support for Rostock
rnacm2Rf.escad - double size for Rostock
rnacm1s.stl - standard size with support
rnacm2.stl - double size
rnacm1Rfs.stl - standard size with support for Rostock
rnacm2Rf.stl - double size for Rostock
Other:
ddC - dideoxycytidine monophosphate
ddC.escad - default is double size, set n=1 for standard
ddCs.escad - with support, default is standard size, set n=2 for double
ddC1Rfs.escad - standard with support for Rostock
ddC2Rf.escad - double size for Rostock
ddC1s.stl - standard size with support
ddC2.stl - double size
ddC1Rfs.stl - standard size with support for Rostock
ddC2Rf.stl - double size for Rostock
Printing the various dnat1Rfs###.gcode files can be used to determine optimum printhead temperature for the current Rostock filament; just compare the print quality of the pieces & use whatever temperature works best.

Warning: The pieces are a choking hazard.

Nucleic acids are long chains of nucleotides; each piece represents a nucleotide. Nucleotides are made up of a base (the vertical part; adenine, cytosine, guanine, & thymine in DNA; adenine, cytosine, guanine, & uracil in RNA), a sugar (the flat part except for the knob; deoxyribose in DNA, ribose in RNA), & a phosphate (the knob). The base joined to the sugar without the phosphate is known as a nucleoside (deoxyadenosine (dA), deoxycytidine (dC), deoxyguanosine (dG), & thymidine (T) for DNA, adenosine (A), cytidine (C), guanosine (G), & uridine (U) for RNA (yes, adenine & guanine are bases while adenosine & guanosine are nucleosides but inconsistently cytosine is a base while cytidine is a nucleoside)). The nucleotides are called deoxyadenosine monophosphate (dAMP), deoxycytidine monophosphate (dCMP), etc.
In DNA & RNA G pairs with C while A pairs with T or U; note how the vertical zig-zags of the bases fit together (DNA & RNA can pair with themselves or each other in largely the same way). DNA stores information and is normally double stranded (the famous double helix). RNA is used to transfer information or is structural and is usually single stranded (with many small double-stranded regions where it pairs with another part of itself). The model correctly shows single-stranded RNA & DNA being more flexible than double-stranded, but is far too rigid in both cases.
With these pieces it is possible to explain some features of nucleic acids:
It is easy to see how double-stranded DNA can replicate - just separate the two strands and make new strands by selecting the pieces that fit together correctly.
Since G pairs with C & A pairs with T double-stranded DNA contains the same amount of G & C and the same amount of A & T (this does not apply to single-stranded nucleic acids (i.e., most RNA)) but the amount of G & C need not be the same as the amount of A & T. Which do you think would be more stable: DNA with a high G & C content or DNA with a high A & T content?
Can you figure out why DNA uses T (which takes the cell more raw material to produce) instead of U (hint: C can occasionally degrade to U)?
DNA contains the information for producing proteins made up of 20-22 different amino acids strung together in a row (just as DNA is composed of the 4 different nucleotides A, C, G, & T strung together) plus a stop signal. Three consecutive nucleotides in DNA code for 1 amino acid in a protein. Can you figure out why 3 nucleotides are used?
Modified nucleic acids that contain 2 or 4 additional nucleotides besides A, C, G, & T have been created. Can you figure out how DNA could have 8 different bases and still replicate normally?
DNA & especially RNA can contain modified bases. These range from the simple (thymine instead of uracil in RNA (rT)) to the complex (ms2t6A) to the downright weird (pseudouridine) to the absurd (glutamylQ). Their functions vary & can be mysterious; new modifications are still being found. Modified bases may form unmodified base pairs (U & rT pair with A in the same way), but sometimes form different base pairs (converting A to I causes it to pair with C) or are unable to form any base pair (m1I). Pieces have been made for rT, I, m1I, Cm, & pseudouridine in RNA. I occurs in tRNA at a position that is flexible, allowing it to shift around & form unconventional "wobble" pairs with U & even A in addition to the standard C. Do you see how this might happen? What other wobble pairing might you expect?
Also included is the nucleotide form of ddC, a drug used against HIV. How do you think it blocks HIV? It, along with the similar ddA, etc., is also used to determine the sequence of nucleotides in DNA & RNA. Do you see how this can be done (hint: it is possible to separate DNA molecules by length)?

module ddC(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg) /*dideoxycytosine monophosphate (ddCMP), from anti-HIV drug ddC & terminator ddCTP used in DNA sequencing; set n=1 for standard size, n=2 for double size; print with Support type=Touching buildplate & Platform adhesion type=None; July 11, 2019*/
{union() {linear_extrude(t) difference() {polygon([(0,3*f),(8*f,3*f),(8*f,0),(10*f,0),(10*f,5*f),(12*f,5*f),(12*f,7*f-tf/2),(16*f-tf,9*f-tf),(16*f-tf,9*f),(12*f,11*f-tf/2),(7*f,14*f),(3*f-cg,14*f),(3*f-cg,18*f),(0,18*f)]); /*deoxyribose*/
translate(5*f,3*f) circle(r=3*f); /*socket*/ }
translate(1.5*f-cg/2,18.5*f,0) cylinder(r=3*f-cg,h=t); /*knob(phosphate)*/
translate(12*f-tf,9*f,0) rotate([90,0,0]) linear_extrude(tf) polygon([(0,0),(6*f-g,0),(6*f-g,8*n+g),(10*f-g,8*n+g),(10*f-g,12*n),(3.464*f,12*n),(0,10*n)]); /*cytidine*/
translate(lx+ll/4,ly+ll/4,t) linear_extrude(lh) difference() {circle(r=ll/4); /*d outer circle*/
circle(r=ll/4-lt); /*inner circle*/ }
translate(lx+ll/2-lt,ly,0) cube(lt,ll,t+lh); /*bar*/
translate(lx+3*ll/4+ls,ly+ll/4,t) linear_extrude(lh) difference() {circle(r=ll/4); /*outer circle 2*/
circle(r=ll/4-lt); /*inner circle 2*/ }
translate(lx+ll+ls-lt,ly,0) cube(lt,ll,t+lh); /*bar 2*/
translate(lx+3*ll/2+2*ls,ly+ll/2,t) linear_extrude(lh) difference() {circle(r=ll/2); /*C outer circle*/
circle(r=ll/2-lt); /*inner circle*/
polygon([(0,0),(ll,-ll),(ll,ll)]); /*R quadrant*/ } } }
n=2; /*z size 1=standard,2=double*/
f=n; /*x & y size, normally same as n*/
g=0.25; /*gap*/
t=1.5*n; /*z thickness*/
tf=t; /*x & y thickness, normally same as t*/
ll=4*f; /*letter size*/
lt=0.65*f; /*letter thickness*/
lh=0.7; /*letter height*/
lx=0.5*f; /*letter x*/
ly=7*f; /*letter y*/
ls=1.5*lt; /*letter spacing*/
k=1.118; /*sqrt(5)/2*/
cg=0.12*f; /*circle gap*/
ddC(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg);

module ddCs(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg,st,sg,sd) /*dideoxycytosine monophosphate (ddCMP), from anti-HIV drug ddC & terminator ddCTP used in DNA sequencing; set n=1 for standard size, n=2 for double size; includes support, print with Support type=None & Platform adhesion type=None; July 8, 2019*/
{union() {linear_extrude(t) difference() {polygon([(0,3*f),(8*f,3*f),(8*f,0),(10*f,0),(10*f,5*f),(12*f,5*f),(12*f,7*f-tf/2),(16*f-tf,9*f-tf),(16*f-tf,9*f),(12*f,11*f-tf/2),(7*f,14*f),(3*f-cg,14*f),(3*f-cg,18*f),(0,18*f)]); /*deoxyribose*/
translate(5*f,3*f) circle(r=3*f); /*socket*/ }
translate(1.5*f-cg/2,18.5*f,0) cylinder(r=3*f-cg,h=t); /*knob(phosphate)*/
translate(12*f-tf,9*f,0) rotate([90,0,0]) linear_extrude(tf) polygon([(0,0),(6*f-g,0),(6*f-g,8*n+g),(10*f-g,8*n+g),(10*f-g,12*n),(3.464*f,12*n),(0,10*n)]); /*cytidine*/
translate(lx+ll/4,ly+ll/4,t) linear_extrude(lh) difference() {circle(r=ll/4); /*outer circle*/
circle(r=ll/4-lt); /*inner circle*/ }
translate(lx+ll/2-lt,ly,0) cube(lt,ll,t+lh); /*d bar*/
translate(lx+3*ll/4+ls,ly+ll/4,t) linear_extrude(lh) difference() {circle(r=ll/4); /*outer circle 2*/
circle(r=ll/4-lt); /*inner circle 2*/ }
translate(lx+ll+ls-lt,ly,0) cube(lt,ll,t+lh); /*2nd d bar*/
translate(lx+3*ll/2+2*ls,ly+ll/2,t) linear_extrude(lh) difference() {circle(r=ll/2); /*C outer circle*/
circle(r=ll/2-lt); /*inner circle*/
polygon([(0,0),(ll,-ll),(ll,ll)]); /*R quadrant*/ }
translate(12*f-tf-g,9*f-tf,0) linear_extrude(8*n) polygon([(6*f+sd,tf+sg),(10*f+sg,tf+sg),(10*f+sg,-sg),(6*f+sd,-sg),(6*f+sd,-sg-st),(10*f+sg+st,-sg-st),(10*f+sg+st,tf+sg+st),(6*f+sd,tf+st+sg)]); /*support*/ } }
n=1; /*z size 1=standard,2=double*/
f=n; /*x & y size, normally same as n*/
g=0.25; /*gap*/
t=1.5*n; /*z thickness*/
tf=t; /*x & y thickness, normally same as t*/
ll=4*f; /*letter size*/
lt=0.65*f; /*letter thickness*/
lh=0.7; /*letter height*/
lx=0.5*f; /*letter x*/
ly=7*f; /*letter y*/
ls=1.5*lt; /*letter spacing*/
k=1.118; /*sqrt(5)/2*/
cg=0.12*f; /*circle gap*/
st=0.6; /*support thickness*/
sg=0.4; /*support gap*/
sd=0.7; /*support distance*/
ddCs(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg,st,sg,sd);

module dnaa(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg) /*deoxyadenosine monophosphate (dAMP); n=1 is standard, n=2 is double size; print with Support type=Touching buildplate & Platform adhesion type=None; July 11, 2019*/
{union() {linear_extrude(t) difference() {polygon([(0,0),(2.5*f,0),(2.5*f,3*f),(7.5*f,3*f),(7.5*f,0),(10*f,0),(10*f,5*f),(12*f,5*f),(12*f,7*f-tf/2),(16*f-tf,9*f-tf),(16*f-tf,9*f),(12*f,11*f-tf/2),(7*f,14*f),(3*f-cg,14*f),(3*f-cg,18*f),(0,18*f)]); /*deoxyribose*/
translate(5*f,3*f) circle(r=3*f); /*socket*/ }
translate(1.5*f-cg/2,18.5*f,0) cylinder(r=3*f-cg,h=t); /*knob(phosphate)*/
translate(12*f-tf,9*f,0) rotate([90,0,0]) linear_extrude(tf) polygon([(0,0),(8*f,0),(8*f,4*n),(10*f-g,4*n),(10*f-g,8*n+g),(14*f-g,8*n+g),(14*f-g,12*n),(7.464*f,12*n),(4*f,10*n),(0,10*n)]); /*adenine*/
translate(lx/2+ll/4,ly+ll/4,t) linear_extrude(lh) difference() {circle(r=ll/4); /*d outer circle*/
circle(r=ll/4-lt); /*inner circle*/ }
translate(lx/2+ll/2-lt,ly,0) cube(lt,ll,t+lh); /*bar*/
translate(lx/2+ll/2+ls,ly,t) linear_extrude(lh) polygon([(0,0),(k*lt,0),(ll/2,ll-2*k*lt),(ll-k*lt,0),(ll,0),(ll/2,ll)]);/*A square inverted V*/
translate(lx/2+ll/2+ls,ly,t) linear_extrude(lh) polygon([(ll/6+lt/4,ll/3-lt/2),(5*ll/6-lt/4,ll/3-lt/2),(5*ll/6-lt/4,ll/3+lt/2),(ll/6+lt/4,ll/3+lt/2)]);/*bar*/ } }
n=2; /*z size*/
f=n; /*x & y size,normally same as n*/
g=0.25; /*gap*/
t=1.5*n; /*z thickness*/
tf=t; /*x & y thickness, normally same as t*/
ll=5*f; /*letter size*/
lt=0.65*f; /*letter thickness*/
lh=0.7; /*letter height*/
lx=1.5*f; /*letter x*/
ly=7*f; /*letter y*/
ls=1.5*lt; /*letter spacing*/
k=1.118; /*sqrt(5)/2*/
cg=0.12*f; /*circle gap*/
dnaa(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg);

module dnaas(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg,st,sg,sd) /*deoxyadenosine monophosphate (dAMP); n=1 is standard, n=2 is double size; includes support, print with Support type=None & Platform adhesion type=None; July 8, 2019*/
{union() {linear_extrude(t) difference() {polygon([(0,0),(2.5*f,0),(2.5*f,3*f),(7.5*f,3*f),(7.5*f,0),(10*f,0),(10*f,5*f),(12*f,5*f),(12*f,7*f-tf/2),(16*f-tf,9*f-tf),(16*f-tf,9*f),(12*f,11*f-tf/2),(7*f,14*f),(3*f-cg,14*f),(3*f-cg,18*f),(0,18*f)]); /*deoxyribose*/
translate(5*f,3*f) circle(r=3*f); /*socket*/ }
translate(1.5*f-cg/2,18.5*f,0) cylinder(r=3*f-cg,h=t); /*knob(phosphate)*/
translate(12*f-tf,9*f,0) rotate([90,0,0]) linear_extrude(tf) polygon([(0,0),(8*f,0),(8*f,4*n),(10*f-g,4*n),(10*f-g,8*n+g),(14*f-g,8*n+g),(14*f-g,12*n),(7.464*f,12*n),(4*f,10*n),(0,10*n)]); /*adenine*/
translate(lx/2+ll/4,ly+ll/4,t) linear_extrude(lh) difference() {circle(r=ll/4); /*d outer circle*/
circle(r=ll/4-lt); /*inner circle*/ }
translate(lx/2+ll/2-lt,ly,0) cube(lt,ll,t+lh); /*bar*/
translate(lx/2+ll/2+ls,ly,t) linear_extrude(lh) polygon([(0,0),(k*lt,0),(ll/2,ll-2*k*lt),(ll-k*lt,0),(ll,0),(ll/2,ll)]);/*A square inverted V*/
translate(lx/2+ll/2+ls,ly,t) linear_extrude(lh) polygon([(ll/6+lt/4,ll/3-lt/2),(5*ll/6-lt/4,ll/3-lt/2),(5*ll/6-lt/4,ll/3+lt/2),(ll/6+lt/4,ll/3+lt/2)]);/*bar*/
translate(12*f-tf-g,9*f-tf,0) linear_extrude(4*n-g) polygon([(8*f+sd,tf+sg),(11*f+sg,tf+sg),(11*f+sg,-sg),(8*f+sd,-sg),(8*f+sd,-sg-st),(11*f+sg+st,-sg-st),(11*f+sg+st,tf+sg+st),(8*f+sd,tf+sg+st)]); /*support1*/
translate(12*f-tf-g,9*f-tf,0) linear_extrude(8*n) polygon([(10*f+sd,tf+sg),(14*f+sg,tf+sg),(14*f+sg,-sg),(10*f+sd,-sg),(10*f+sd,-sg-st),(14*f+sg+st,-sg-st),(14*f+sg+st,tf+sg+st),(10*f+sd,tf+sg+st)]); /*support2*/ } }
n=1; /*z size*/
f=n; /*x & y size,normally same as n*/
g=0.25; /*gap*/
t=1.5*n; /*z thickness*/
tf=t; /*x & y thickness, normally same as t*/
ll=5*f; /*letter size*/
lt=0.65*f; /*letter thickness*/
lh=0.7; /*letter height*/
lx=1.5*f; /*letter x*/
ly=7*f; /*letter y*/
ls=1.5*lt; /*letter spacing*/
k=1.118; /*sqrt(5)/2*/
cg=0.12*f; /*circle gap*/
st=0.6; /*support thickness*/
sg=0.4;/*support gap*/
sd=0.7; /*support distance*/
dnaas(n,g,t,ll,lt,lh,lx,ly,ls,k,f,tf,cg,st,sg,sd);

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