Posted: Mon Jan 02, 2012 8:08 pm
Title: Epoxy vs polyester.
|ToolMaker (Rookie) |
|Mon Jan 02, 2012 8:08 pm|
|Epoxy vs polyester. |
Just to clarify, when you say "fiberglass resin" most people think polyester resin, which IMHO wouold not be a good choice. Epoxy reisn is very different with much better adhesion, toughness, and chemical reistance -- and higher cost. Unlike polyester, where you can add more activator to get it to kick faster, epoxy needs a more precise balance of resin to hardner, otherwise it just gets weaker.
I've used Gougeon Bros. epoxy (sold in marine supply stores) for over 40 years and never had a failure of the epoxy. Which is not the same as never having a failure... They sell resin and hardner pumps which make the mixing simple, one pump resin to one pump hardner.
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