Quote:
Originally Posted by Vezo, Part II
. . . However, I am very surprised that the hull sides do not show the woven roven traditional surface found on my 1979 20 MA. Anyone have an answer? . . .
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I posted the SeaCraft laminate schedule
here early last week. Note that SeaCraft used 4 layers of matt between the gel coat and roving, waay more than anyone else, to minimize print thru.
Although most boats won't show any print thru right after being popped out of the mold, all polyester resin continues to cure for years after it initially kicks off. When it cures, it shrinks, and the more it shrinks, the more likely your are to see print thru. This curing and shrinkage is a chemical reaction that's driven by temperature, so a boat that's stored indoors up north will tend to show much less shrinkage and print thru than a boat thats been sitting outside uncovered in South Florida all it's life! Was your MA a dark color by any chance? Dark colors absorb more heat and can easily be 20-30 degrees hotter in the bright sun, so hull color and the amount and intensity of sun exposure are the major variables that would explain why the surface finish of 2 boats produced at the same time can look significantly different a few years later!