this is incredible, so realistic, I'd love to give it a try. Where do you buy this kind of modeling material? does it harden naturally or have to be fired?
It's polymer clay, which it needs to be fired, but its a lot of fun. I'm not sure which brand she uses in particular, but from my research Fimo and Prosculpt are two of the best.
Depends on the baking time and whatnot, from what I understand. Sculpey is brittle and tends to hold a lot of mistakes once baked, I know that. I've never actually used Fimo, but a lot of the artists that I have seen seem to swear by it.
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It cures in a home oven.
Best of luck!