Polymorph will change the way you make parts. It’s a commercial grade thermoplastic that softens enough to be formed into any shape at around 62 – 65 C. You simply heat the pellets in hot water or with a hair dryer. It hardens at room temperature to form a tough plastic material similar in consistency and colour to Nylon. It can be drilled, sanded, ground, machined or heated and reformed again and again. Endless uses in model making, craft, single part manufacture, prototyping, engineering, science, lab, clinical applications and more.

It goes by various names: Plastimorph, polymorph, plastimake, InstaMorph, etc.

Flitetest have a quick review of it here with a video showing making a replacement plastic part for his Plane http://flitetest.com/articles/InstaMorph_R/C_Plane_Repair

Link to one company that sells the stuff – has lots of info on it http://www.plastimake.com/

I have seen it on EBay too – there was an Aussie seller with 1KG lots for $40 delivered but he is out at the moment.  Here’s a UK one that post to Australia
http://www.ebay.com.au/itm/1kg-Polymorph-Thermoplastic-Friendly-Plastic-DIY-/170750078621?pt=UK_Body_Shop_Supplies_Paint&hash=item27c17f6e9d

“Versatile, easy to use, tough… could Plastimake be the duct tape of the next decade?”
– Popular Science Australia, June 2012

Check out the Examples on the Plastimake site

Melting