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<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial>>You might try delrin...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial>Ah, that's the rub. I'm not using CNC to cut the gears. I want
to use the simplest tools possible. If I had the class use CNC, it would become
a class in CNC operation. This is a class in the theories of mechanics and
kinetics; how to get "stuff" to move in interesting ways. So I need some
universally easy material to work in. That's why we're using foam core right
now. I want them to be able to fashion their own gears, cams etc with their own
hands persay so they can get a hands-on feel for what they're building. I could
buy lots of parts but that would avoid much of the basic hands-on-edness that
I'm trying to impress on them.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial>I envision them squishing shapelock in their hands, pressing
it into gear molds, stretching it into shape by hand.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial>I want to use Phun (the 2d physics simulator) but for
real.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=328384521-12032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
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<DIV dir=ltr align=left><FONT size=2 face=Tahoma><B>From:</B> Corey McGuire
[mailto:coreyfro@coreyfro.com] <BR><B>Sent:</B> Friday, March 12, 2010 1:12
PM<BR><B>To:</B> Lee Sonko<BR><B>Cc:</B> NoiseBridge Discuss; Orb
Swarm<BR><B>Subject:</B> Re: [Noisebridge-discuss] Who wants Kilograms of
Shapelock?<BR></FONT><BR></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #0000ff 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV></DIV>You might try delrin. It's great for gears because it is hard
and REALLY low friction. Are you using CNC to cut the gears?
Inkscape has an AWESOME built in gear tool. I used it on the
Techshop laser engraver to GREAT effect (acrylic.)<BR><BR>
<DIV class=gmail_quote>On Fri, Mar 12, 2010 at 1:08 PM, Lee Sonko <SPAN
dir=ltr><<A href="mailto:lee@lee.org">lee@lee.org</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>I'm in
for $10 at up for $15/kg</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2 face=Arial>I'm
trying to find a better material to use for the Mechanical Sculpture classes
I teach at the Crucible. Right now we generally cut gears, cams and levers
out of foam core. It's easy, safe and inexpensive. But it's foam core and...
well it kinda sucks. If I taught mechanics in metal, we'd spend all our
time learning how to use the tools to work the metal; the same goes with
wood :-(. Maybe Shapelock will fit the bill: easy to work and re-work with
inexpensive tools, safe, inexpensive, fairly sturdy when
cool.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial>Lee</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN><FONT color=#0000ff size=2
face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left>
<HR>
</DIV>
<DIV dir=ltr align=left><FONT size=2 face=Tahoma><B>From:</B> <A
href="mailto:noisebridge-discuss-bounces@lists.noisebridge.net"
target=_blank>noisebridge-discuss-bounces@lists.noisebridge.net</A>
[mailto:<A href="mailto:noisebridge-discuss-bounces@lists.noisebridge.net"
target=_blank>noisebridge-discuss-bounces@lists.noisebridge.net</A>] <B>On
Behalf Of </B>Corey McGuire<BR><B>Sent:</B> Friday, March 12, 2010 11:58
AM<BR><B>To:</B> NoiseBridge Discuss; <A
href="mailto:hackerdojo@googlegroups.com"
target=_blank>hackerdojo@googlegroups.com</A>; Orb Swarm; Chris
Tacklind<BR><B>Subject:</B> [Noisebridge-discuss] Who wants Kilograms of
Shapelock?<BR></FONT><BR></DIV>
<DIV>
<DIV></DIV>
<DIV class=h5>
<BLOCKQUOTE
style="BORDER-LEFT: #0000ff 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px"
dir=ltr>
<DIV></DIV>Instead of buying the name brand material for $1.50 an oz, I am
looking for a source of CAPA 6800 at $10 a kg or about $0.30 an oz.
I might need to get this in a 20kg volume (that's right, I'm
measuring volume in grams!) That means a $200 purchase. maybe
more with shipping and distributor specific pricing, but I have it on
authority that $10 a KG is not unreasonable.
<DIV><BR></DIV>
<DIV>Anyone who knows of a source, please help me out. Right now I
am looking to work with Tri-ISO.<BR>
<DIV><BR></DIV>
<DIV>Who is interested? Do I have $200 of interest in Shapelock?
Or, how many KG would you like at $10 a KG? The more interest,
the more likely the chance of success.</DIV>
<DIV><BR></DIV>
<DIV>Ripped from <A
href="http://en.wikipedia.org/wiki/Polycaprolactone"
target=_blank>http://en.wikipedia.org/wiki/Polycaprolactone</A> :</DIV>
<BLOCKQUOTE
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0px; MARGIN: 0px 0px 0px 40px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0px">
<BLOCKQUOTE
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<DIV><SPAN style="LINE-HEIGHT: 32px; FONT-FAMILY: sans-serif"><B>PCL
also has many applications in the hobbyist market. Some brand names
used in selling it to this market are Shapelock and Friendly Plastic
in the US, and Polymorph in the UK. It has </B></SPAN><SPAN
style="LINE-HEIGHT: 32px; FONT-FAMILY: sans-serif"><A
style="COLOR: rgb(0,43,184); TEXT-DECORATION: none"
title="Physical property" href="http://wiki/Physical_property"
target=_blank><B>physical properties</B></A></SPAN><SPAN
style="LINE-HEIGHT: 32px; FONT-FAMILY: sans-serif"><B> of a very
tough, nylon-like plastic that melts to a putty-like consistency at
only 60°C. PCL's specific heat and conductivity are low enough that it
isn't hard to handle at this temperature.This makes it ideal for
small-scale modeling, part fabrication, repair of plastic objects,
and </B></SPAN><SPAN
style="LINE-HEIGHT: 32px; FONT-FAMILY: sans-serif"><A
style="COLOR: rgb(0,43,184); TEXT-DECORATION: none"
title="Rapid prototyping" href="http://wiki/Rapid_prototyping"
target=_blank><B>rapid prototyping</B></A></SPAN><SPAN
style="LINE-HEIGHT: 32px; FONT-FAMILY: sans-serif"><B> where heat
resistance isn't needed. Though molten PCL readily sticks to many
other plastics, if the surface is cooled, the stickiness can be
minimized while still leaving the mass
pliable.</B></SPAN></DIV></BLOCKQUOTE></BLOCKQUOTE>
<DIV><BR>-- <BR>Success is a tasty spirit distilled from bitter
failure<BR>--Coreyfro<BR></DIV></DIV></BLOCKQUOTE></DIV></DIV></DIV></BLOCKQUOTE></DIV><BR><BR
clear=all><BR>-- <BR>Success is a tasty spirit distilled from bitter
failure<BR>--Coreyfro<BR></BLOCKQUOTE></BODY></HTML>