Not sure if this is the right section, but im looking for some putty that i can use to make custom faces, ive tried my local hobby stores but they don't have what i want. I want it to have a concistancy of clay or blue tac that and will harden once i have the shape i want so i can sculpt it into transformer faces and parts.

Any help would be great

This link here shows what i want, but where can i get some here
http://www.tfw2005.com/boards/tutori...culpt-bot.html