Sculpey Baking!

[leopardwolf.livejournal.com]

Arrrrgghh. I'm making a variety of items with white Sculpey right now. They vary in thickness and so I am having some difficulty in telling when they are baked to finish. The pieces I just finished and took out of the oven are firm, but still slightly flexible. I figured they hardened better when cool, but most of the first batch are cool now and still slightly flexy, not rock hard.

Trying to figure out if this is normal or not. I only ever baked one other item, and that was ages ago and it wasn't with Sculpey. It was some other brand. But it came out rock hard.

These pieces are still slightly flexy as if they aren't baked all the way through. The only problem is that the surfaces on some turned a purple shade, which makes me think overbaked. The label says not to overbake, but the oven I have is a convection oven that is evilly notorious for cooking food waaay too fast (especially on top, crisping brownies too fast before the inside is done, etc) and I'm not sure what to do. Should I put the pieces in longer? I plan to paint them with acrylics anyway once they're ready. So that odd coloration really isn't an issue.

Anyone else have any experience with the stuff? Any feedback is appreciated! I'll post the finished pieces later on.