Quote:
Originally Posted by Blue_Heron
I've brushed gelcoat and I've sprayed it. I've gotten better results spraying it. If you have a compressor, spray is the way to go. I use a $16 gravity feed gun from Harbor Freight and thin the gelcoat 20% with acetone. Thin the gelcoat before you add the catalyst and use 2% catalyst based on the pre-thinned volume. Make sure you have at least 15 mils thickness of gelcoat.
For mold release, wax is good, PVA (Partall Film #10 if I remember right) is better for this application. PVA must be sprayed. I use the Harbor Freight touch up gun @ 60psi for PVA.
Dave
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Your finish will be fine for a sea chest with pva. Alot of water is all you need for gun clean up. I also use water to remove my parts. from a mold. A wooden wedge to open a void enough to get water into the finished part will float it out of there and unstick the PVA back into a liquid. Lots of water for PVA clean up. No acetone or chemicals . Just helping a little to blue herons advice for a first timer.