vacuum forming.

Mike;

I have used magic sculpey to form a master and it works fine. As far as the type of plastic to use evergreen should work if not find a supplier with Squadron Clear it works great. I have in the past covered the plastic holder with the "to be formed" plastic in my Vac U Form over the heating coil and all with household aluminium foil and it holds the heat in long enough to heat the plastic evenly. This was a tip in one of the Sheperd Paine books. Try it and see. Hope this helps "clear" up your troubles

Cheers;

Gregory