58185Polyester resin questions
- Jul 25, 2008A friend just asked me for advice about fiberglassing plywood for
replacing the sides on a horse trailer. I would think that polyester
would be a fine resin for this and less expensive than epoxy, but I
haven't used polyester for about 40 years.
I vaguely recall people saying polyester doesn't always stick well to
plywood. I had no such problem 40 years ago, but maybe I was lucky. Are
there issues or practices to be careful about to ensure adhesion? Does
it matter whether he uses plain old exterior fir or pine?
I know where to order gallons of epoxy but I don't know where to go for
polyester. When I was kid, my dad brought it home from somewhere --
never knew where. May have bought it at the place where they
manufactured Dolphin sailboats. Does anyone have links to sites for
purchase? Would West Marine or a local agricultural supply place be
sources? (Those are the places I go for trailer kits.)
Are there issues around formulation, like with epoxy where you can pay
more for non-blushing formulas?
Will any old paint do when he is done? I suggested latex porch paint, he
had been advised to go with a marine paing (a one part polyurethane, I
imagine), but that really seems like overkill to me.
Thanks for any help/advice.
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