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XPS Foam For Foam Core Builds

27K views 44 replies 15 participants last post by  bcblues  
Been looking at some of the foam core builds here and was wondering if anyone has done one using the blue, green or pink XPS foam you can buy at any home improvement store? It is completely compatible with Epoxy. There are some tricks to working with it but it would seem to me to be useful for one of these builds.
I know years ago many guys tried to make surfboards out of the same foam as a less expensive diy alternative. In the heat the foam would off gas and the glass would delam. Not sure about the epoxy route.