Quote:
Originally Posted by aerohead
Darin,was that the high or low expansion foam?
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I'm not sure - it was just "Great Stuff" in a can. The label said it would expand up to twice the original sprayed depth depending on humidity.
Quote:
Originally Posted by Whoops
The thicker you try to put it on, the longer it will probably take to set up. My experience with it was that it took more like 3-5 days to set up hard enough, deep enough to not do the seep, sag and bubble routine.
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That's good info. I'd say it was up to 2.5 inches thick in places. Probably too much. But I also don't want to wait 3-5 days for it to cure, so I don't consider it time wasted!
Thanks for the suggestion about the skim coat of resin on the cardboard. I'm going to do that tonight.
I re-built the side portions of the Kammback in cardboard this evening. Simple curves only. It's not quite as lovely as the compound curvature of the foam (before it distorted), but it'll suffice. So I should have 2 layers of glass on it by the end of tomorrow.
Anyone with experience glassing cardboard want to take a guess on whether that will be adequate stiffness given the shape I'm working with? Glass the underside as well, or just resin it?