Hi, I have made many molds for my planes.I just finished one and just can'e get it to release!I finially had to break the mold to get the piece out. I use TR Industries mold release to wax the mold, about eight coats. Then I sprayed with my airbrush, three coats of mold release called PVA 360, a green colored agent. I waited till it was dry, about two-three hours before I put the first coat of expoxy , about a hour later I glassed the mold with two layers of 6 oz. glass. What is the problem here????? Am I useing the wrong release agent? Thanks for any help. The mold has a nice shiny interior, five coats of white laqure,buffed out smooth.