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 class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<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 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">
<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>