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Old 11-18-2012, 04:03 PM   #161 (permalink)
JRP3
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The thing to remember with epoxy is the hardener is not really a catalyst like with polyester resin. The ratio of A to B must be exact since the molecules need to cross link with each other. Extra of either part means molecules lying around with nothing to cross link to. In other words it may feel hard eventually but it won't have the same properties and strength. It may not matter much in a non stressed area of course.

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