A couple things to remember with these forms though... and trust me this is from experience:
- DO use damp paper towels on the form before putting the slab on them. I have had students forget this and they end up have to redo the entire project because it will not separate. It's OK if it hangs off the edge. The kids will want to tear it but I tell them it's a little handle to lift their mask out.
<----- This is what a covered form should roughly look like.
- Let the masks stay on the form past the point of leather hard. My first year making masks with these I did this. I thought I would just let it slowly dry on the without thinking. To my surprise one morning several... and by several I mean almost an entire class had cracked masks. Duh moment of the day... clay shrinks folks... Take the mask off the form when it's leather hard! If its a little flimsy wad up some newspaper and just put it under the mask while it dries to keep shape.
And Make sure:
Kids are creating spots for air to escape! With mask kids get creative and want to put horns, gigantic cheeks, or a giant eye. Remember to have them hollow them out, and or create an air hole. Nothing is worse when students works so hard, to find out the chin on their on their mask to exploded off.
Explosions are bad... very bad for the students project and those around. If pieces do break off, I will tape it to the mask until I can adhere it... so pieces don't walk off.