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Old Nov 02, 2012, 11:07 PM
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Wind, hill, ... I'm keen ...
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Australia, QLD, Woody Point
Joined Nov 2006
5,025 Posts
Jim the 2pack polyurethane paint sounds very good.

Well I seem to have it sorted out. I have laid up 4 things in moulds. All of them I cleaned and polished and did 4 coats of sealer then 4 of Frekote. All popped out fine.

After vac bagging the skins in, before joining, I trim the edges and maybe I have too much protruding, but I do seem to have to work hard at the trimming and I worry that I am taking all the release off by being rough on the flange, working at it with a broad knife.

So I wipe some release on the flange before joining. I still find that the flanges need scraping clean. Not from normal epoxy bleed but from the expanding foam bleeding out (either foaming epoxy or PU). Same with the TE trench ... Usually needs some scraping out.
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