Thursday, May 26, 2005

Polymorph and similar materials

I've been dregding for information on Polymorph. Louis-Philippe Breton suggests Polymorph is a polymer known as Polycaprolactone(PCL). Unfortunately, it seems this may be biodegradable. Bad in engineering terms, and also bad for the environment. [Why? It limits the recycling and puts the carbon that was locked safely away back in circulation in the atmosphere.]

Similar materials to Polymorph appear to be:

Protoplast, sheet and pellets, various colours:
http://www.wfr-aquaplast.com/tmppcc_default.htm
http://www.wfr-aquaplast.com/pages/protosheets.html

Shapelock:
http://shapelock.com/

Friendly Plastic by Amoco, various colours and sticks:
http://www.sunshinecrafts.com/body_friendly_plastic.html

Hexcelite / X-lite / Vara-form:
http://www.runlite.com/varaform/index.html
# posted by vik-olliver @ 1:12 AM
Comments:
I've been playing with some Shapelock recently. Tends to be very sticky when melted. I tried pushing it through a heated syringe and also tried a low-temp glue gun with a 7/16" dowel as a plunger. In each case, the plastic came out but it required quite a bit of effort. Definitely not as fluid as hot-melt glue.

I also tried, just for fun, some HDPE (shredded milk jug) in a high-temp glue gun. Also quite difficult to get moving.
# posted by Blogger Steve DeGroof : May 26, 2005 2:14 AM
I've managed to form Polymorph into fairly even 7mm sticks and squirt it through a glue gun.

If consistent 2mm strands can be achieved, they could be used as a basis for a mini glue gun, and that woul dbe much easier to control.
# posted by Blogger vik-olliver : May 27, 2005 5:51 AM
Nice. The Polymorph should be flexible enough that the strands could be spooled for later use.

What temperature was the glue gun? Mine was about 200F (93C). I wonder if either it wasn't hot enough or Polymorph is a easier to manipulate than Shapelock.
# posted by Blogger Steve DeGroof : May 27, 2005 8:53 PM
My glue guns runs at around 114C and is rated at 10W. I have one for EVA and one for Polymorph. They don't melt HDPE.

I've moulded a gearwheel out of Polymorph too, and I'm testing it now.

Vik :v)
# posted by Blogger vik-olliver : May 28, 2005 6:43 AM
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