Working from Inside
If the damage area is small and above the waterline, make the repair from inside the hull, if possible. You are going to bevel the edge of the hole with a 12-to-1 chamfer, so if you repair a 3-inch diameter hole through a 1/2-inch-thick hull from the outside, you end up with about 15 inches (diameter) of surface damage to refinish. Repair it from the inside and you have only a 3-inch hole to refinish.<<< 15 inch hole , quoted from the casey page,,, and nowhere did i say that poly adheres stronger then epoxy i said the mechanical bond is bout same hehe ( how deep into the poly does epoxy melt into, and if it does that isnt it a chemical bond?),, just because something is stronger or does something better doesnt mean its ALWAYS the right answer,,and if your any kind of fiberglasser you know there is shrinkage and you deal with that and it ends up right,,,,,,take a 3 foot square of glass,,lay it up with poly,,, cut a hole bout say,,5 inches,,repair it with epoxy,, now take it and bend it,,,,,what flies?,, that epoxy patch does,,,,now do the same with epoxy and glass,,,fix the hole with epoxy,, bend,,, what flies??? nothing.
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Last edited by the1much; 11-12-2007 at 08:59 AM.