@jestersmother: I have heard to sew with a layer of waxed paper over your project. It prevents the "gummies." I have also heard it useful for sewing with metallic thread that tends to break easily. I haven't had a need, so I don't know if it will work, but thought I would pass it along.

I saw it on a forum board for Irish Dance dressmakers who use a lot of sequins and such.

Has anyone tried using the Rigid Wrap plaster gauze strips to make the plaster mold? I think I will have to give this a try after Xmas.