Well I have been sanding the entire boat, piece by piece, to repaint. Turns out the side of the cabintop has hundreds of small blisters, a very few of which started weeping after we sanded (or maybe before, but none of us noticed).
These are the first of the infamous Valiant blisters that I have experienced, so I consider myself lucky. The bulging ones can be ignored, but I feel the need to take care of the ones that are weeping, so that the paint will stick when I put it on. Not like it will help much–those other hundred blisters will probably be weeping within a few months anyway–but it is after all only cosmetic so I’m going to get my painting finished and then call it good, and do my best to ignore the rest of the blisters that will surely come.
I dig out the blister with a sanding tip on the dremel, until it looks like all the wet stuff is gone. Then clean/dry with acetone on a rag. Then mix up a small batch of quikfair and spread it on, trying to leave the surface of the quikfair a little high. After it dries (sandable in about 5 hours) I sand it fair. Then it’s ready for the normal painting procedure (two coats of epoxy primer, two coats of two-part polyurethane).
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