Wow, I didn't know that this stuff is usable for professional purposes. I have a cup of that stuff (if it's what I think it is). Just thrown bust made out of it against a wall and it bounced intact. Crazy stuff.
Три вопроса: 1) это требует термической обработки? 2) чтобы покрасить нужны какие-то специальные краски или простые как, скажем, та же гуашь подойдут? 3) ты используешь какие-нибудь инструменты или всё вручную делается?
I'm not sure what hontor does, but you can paint air dry clay (which I think this person has used here) and polymer clay (you bake it). Whether or not the paint holds up on its own depends on the quality of paint. Many artists choose to seal the painted piece with varnish (matte, satin, or glossy if you desire). Air dry clay will need to be sealed in any case, due to the nature of it. You don't want it to get wet and turn to mush. You can also add paints and other pigments to the air drying clay before sculpting.