Okay folks, I'm having a recurring problem with the gasket rubber mouthplates, and need some advice...
Anyway, I'm liking the gasket rubber for mouthplates, it is really flexible, which is what like, however, I'm having issues when attaching the mouth to the foam rubber: the roof of the mouth attaches beautifully to the foam skull, however, it's the jaw where I keep having problems, the foam jaw seems to like to keep pulling down on the sides of the mouth, making the puppet look it has a permanent double-sided sneer. Irregardless of the thickness of the foam, I've built a puppet with half-inch-thick foam for the head, and I'm in the process of building another puppet with inch-thick foam for the head, yet with both puppets, I have that "sneer" problem.
I took Steve's advice about the half-inch seam allowance for the bend in the mouthplates, and before I've even tried having no foam in the jaw at all like the earlier AMs, as even Jarrod said the fabric would provide enough shape for the jaw (however I didnt have the desired results in that department).
What do you guys think? What can I do different to stop coming out with this double-sided sneer?