ToolMaker (Rookie) View all posts in this topic  
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.

Best,
Kate

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