crepe paper tape under Polyform Super Sculpey modeling clay?

Hello 🙂 I would like to use Polyform Super Sculpey modeling clay to make a figure. I've secured the aluminum foil underneath the modeling clay with masking tape. The figure needs to be baked in the oven for 15 minutes at 190 degrees Celsius. Is this problematic because there's paper tape underneath the clay? I've…

Transparent, air-drying/oven-proof mass that is fireproof?

I want to make an ashtray out of modeling clay and decorate it with acrylic paint and other stuff Is acrylic paint fireproof/safe? If not, what would I need to paint over it to make it fireproof? And is there a transparent compound that I can use, for example, if I want to depict water,…