For sure man! Oh interesting..hmm i guess its possible something may be different in Europe. Theres also the factor of different brands. Ive only used one brand, which wasnt high end so that may have been the issue, but since ive been using the PU resin as a gelcoat, i havent had an issue so i havent tried anything else. ya know, sticking with whats working lolThanks for your input! When I'm talking about boat hull work I'm talking about doing them in a mold, the gelcoat goes in first then the inner layers so to speak.
Maybe we have different gelcoats in Europe, it's only when using it as a top layer that I know you have to mix in some wax to get it to cure properly.
As a side question, have you tried using epoxy resin for your fiberglass? Will it bond properly to the PU resin? As it's easier to work with indoors that hopefully will be my route.
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Havnet triede the epoxy resin, but i did want to. it was more pricey then the polyester one so i just havent had the chance to mess with it yet.