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I appreciate and celebrate that my original question has brought about spirited debate and a wealth of knowledge. I thought I'd take a minute and update everyone on what I've decided to do. I looked

Ventilation is important when using polyester resin. I once had a job as a patternmaker for a company that made aerodynamic fairings for trucks. The building I worked in was very large but my work

Any fiberglass problem can be solved with a sufficient amount of sanding. :-) On Monday, July 6, 2020, 7:24:09 PM CDT, crispin_m_miller <crispinmm@...> wrote: Thanks.? At the place I

Thanks. At the place I bought it (in 1984) that was the only kind on the shelf. Later saw catalog listings for polyester resin “with wax” and “no wax.” Just didn’t want Joel to get

Yes, they call that "finishing resin." I've never used it. It made more sense to me to get some PVA (which is also used as a mold release) than to get two kinds of resin for the small amount of

My understanding of this is simply that the catalyst supplied with polyester resin is a thin liquid that can evaporate, and in the resin near the surface it does evaporate, leaving the surface resin

Awesome information, thank you for sharing, the best reason that this group exists. Great tips, and I especially like the comment at the end of not reengineering the Sunfish, we are fans of the basic

Charlie, I've gotten polyester resin and hardener at many hardware stores as well as boat stores. Beware using non-marine polyester filler, but the resin is fine. Both epoxy and polyester have their

I read where polyester resins used to have a higher concentration of styrene, but more recent blend have reduced levels. Dermatitis is a possible result for overexposure to both polyester and epoxy

The entire boat was made from polyester resin, ever since they switched from using wood. At least for fifty years' worth of production. I'd be curious to know if the more recent builds in China or

Hey George You are correct, the Pettit Rep was trying to sell me something. But his experience with the insurance company, maybe just one company, came from his previous life as a big boat repair

Polyester is easier to work with, especially for amateurs. Just make sure you've got a wide enough area to bond. And that Petit rep was trying to sell you something. And is flat-out wrong. -

You need to thoroughly scrub the boat before you start the repair,? too. Agree with grinding out bd spots and appropriate fiberglass and 2 part epoxy repairs.?

I have one available as well.

Thanks! (I'll remember that for the next one that might get offered ;-)

Thanks for the reply! (Hmm, I meant to send that original message as a PM, but I didn't pay attention to the address it went to ;-)

The Sunfish are made with polyester resin. Old School. It is cheaper than epoxy resin, New School. Epoxy bonds to poly but not as well the other way poly to epoxy. Boat pros I have talked to recommend

Is this a test? I’ve heard never ever ever ever ever ever ever ever pollster resin for a boat hull. -Joel Grist

I recently shipped a rudder, it cost about $25

George ?does pretty much as I did. His step by step is good. ?? An extra step I'd do, if the hole is larger, is, before glassing the outer surface, put some glass mat on a cardboard backer, a