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post #8 of Old 09-24-2012
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Re: My First Fiberglass Repair

Originally Posted by paul323 View Post
Finally - this will sound odd - the viscosity of epoxy changes dramatically with temperature. I did a project which started in winter, when the epoxy was like molasses, and ended in summer, when it was like water. You want the epoxy to penetrate wood/cracks/cloth, and so may need to *slightly* warm it to reduce viscosity. Clearly this also accelerated hardening, but with a slow hardener you should be fine.

Enjoy! Fixing fiberglass is easy - and fun!
Good point. Another thing I'd add - if it is possible to wet out the fabric PRIOR to putting it in place, do so. A sheet of heavy cardboard set up in an area where it's easy to work will make the wetting out process much easier.

If you can't do that because of cramped access to the work area or something, another way of making it easier is to paint resin on the bonding area before laying the glass in place. If you put a generous coat down and roll the fabric into it, it will hold it in place while you finish wetting it out "from above".

Also, be sure to stipple it with the resin brush and roll it out until all the white spots disappear - then you know it's fully saturated. After that, squeegee any excess resin out with a plastic "Bondo" squeegee and mop it up with the resin brush.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
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