Bondo for canoe repair - DON'T
Posted by: old_user on Dec-05-11 8:53 AM (EST)
I have not had success with Bondo for long term repairs. The Polyester resin does not seem water proof without a water proof topcoat and the bond is not as strong as an epoxy filler. It also seems more brittle and liable to crack rather than flex. My suggestion is not to be penny wise and pound foolish - go for a marine grade epoxy filler!
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Posted by: cliffjacobson on Dec-27-11 5:23 PM (EST)
I agree that bondo isn't the best. I always use epoxy with filler. Still, bondo does work and holds up well if you paint the finished repair--which I always do. You must paint over epoxy too in order to keep the resin from degrading in sunlight. So it's a moot point. Gel coat material of any kind really doesn't add any strengh, per se, to the boat so it's a moot point. It's just cosmetic.