ORIGINAL: rcpete347
HI all, I am going to make some moulds, to duplicate some parts, would Plaster of Paris be too hot for Fiberglass .On a large surface, would wax paper be good enough for a release agent, or is their some thing else.
Rcpete
No. I do it all the time. Be careful with the wax paper. As some said, you may get creases. Just a coat of wax will let the mold separate. Let dry well and wax the plaster mold well before making parts.