"Polymorph"

[rickshaw]

Just came across this stuff called "polymorph" -

an unexpected by-product of a larger chemical process, is the model makers' dream material come true. It has all the properties of nylon but softens into a mouldable condition at just 62CC - in hot water! Polymorph is supplied in standard granular form and is simply covered with very hot water to soften it. It's then moulded by hand. Polymorph feels like chewing gum when you mould it, but on cooling, you have a part which is as strong, light and tough as nylon. (It is not water soluble. Any water is squeezed out during moulding). If you are not happy with your design, simply put it back into another container of hot water to enable you to remould it time and time again.

[Gondor]

Sounds as if it could melt on a hot rainy day

Gondor

[chrisonord]

I put up a thread about this stuff a while back, someone was selling it on ebay.
Chris.

[frank2056]

In the US it's called "Friendly Plastic". It's more of a very hard hot glue plastic than styrene or resin. It will (like hot glue...) stick to everything when molten. Even to silicone rubber molds (without some mold release). Standard styrene glues won't affect it, although it can be painted with acrylics. Overall I've been pretty disappointed with the stuff.