Join Date: Jan 2001
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I haven't tried chemicals, but I don't doubt some would work.
But the stuff does come off very easily with sanding. If you're doing the entire hull use 80 or 100 grit on a DA sander attached to a vacuum. Still wear a respirator, or else you'll be tasting copper for days after. If there aren't too many loose areas a light wet-sanding with 180 or similar grit might also take care of the problem or at least blend in the rough areas.