kmead
Old enough to know better
You use the gel coat as part of the fiberglassing process that you spray into the mold (after spraying in the mold release, PVA) on a plaster type mold. This gives you a surface on the finished part to paint, sand etc with no voids.
The gel coat on a permanent mold like that is to keep the integrity of the mold he is making, when making a part they spray the mold with mold release and then depending on the finished part material a layer of gel coat or a resin coat.
A plaster type mold is for making 3-5 parts, not for long term part making.
The gel coat on a permanent mold like that is to keep the integrity of the mold he is making, when making a part they spray the mold with mold release and then depending on the finished part material a layer of gel coat or a resin coat.
A plaster type mold is for making 3-5 parts, not for long term part making.