Q:
Will polyester resin adhere to marine ply?
Do I need to do any prep to the ply before matting it over with polyester resin?
I was going to first give the ply a coat of resin mixed with some acetone to help it soak into the ply before matting over.

-------------------------------------------------------------------------------------------------------

A:
Resin bonds to ply by soaking into the surface and setting. This is an OK bond but it can be improved further by using a PU like G4 primer sealer.
G4 Primer Sealer - CFS