I have read most of the posts in this forum but am doing my first fiberglass project and wanted to throw a couple of questions at you. I am making a simple plug. Basically it is a square box (5"X5"X2.5") box made with a plywood base and balsa sides. I am planning to paint the box with a primer base then a coat or two of paint. Then I want to use several coats of car wax (without silicone), then build my fiberglass layers over this base. I figured the paint would help smooth out the box.

Will this work? I would like to use the car wax due to availability and cost. I can’t find PVA or any of the waxes made specially made for releasing. I am going to be making only one or two of these boxes for now and don't really want to put out a lot of money for this project. Since it is a plug and not a mould, I shouldn't have to worry about fisheye problems since I will be painting the outside.

What kind of paint should I use when the form is finished? I am probably going to bang the box around a little bit and would like a paint that is durable.

Thanks for your help. I am kinda excited about working in this medium