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Author	Topic:   Osmotic Blistering
Tom Ouhrabka	posted 11-19-2009 09:00 PM ET (US)         New question on an old topic. I too have osmotic blistering on my older Whaler. With a few hundred small blisters should I use a centerpunch and hollow out each one, kind of like a dentist filling a tooth only with gel coat after which I would seal and bottom paint? I've heard one suggestion that grinding them off is a good way but I'm afraid that I would only top the blisters leaving a hollow kind of hole that might not fill in so well. Would my method work or is grinding really that much better? By grinding wouldn't I be damaging any sound areas between the blisters? Thanks for any advise. Tom
deepwater	posted 11-20-2009 08:21 PM ET (US)             I havent encountered any blisters on my Montauk,,But i would assume that if the blisters were wide spread than individual attention would be better than wide spread grinding
Tom Ouhrabka	posted 11-20-2009 08:43 PM ET (US)             Thanks for the reply. I think I'm going to approach them individually and see how it goes. I'll pop them now and let them dry out until spring. Thanks, tom
anthonylisske	posted 11-20-2009 10:34 PM ET (US)             I had the bottom of my "new to me" 1973 smoothside outrage 21 sandblasted about 4 years ago. There were some blisters. The sandblasting popped all of them, so I just faired them in and epoxycoated. Worked like a charm

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