I have access to a bunch of scrap polystyrene foam at work. (Brand names Dow Blue Board and OC Pink Board) I was wondering if it would be compatible with epoxy. I would like to shape paddle blades with it, mount the foam to my paddle shaft and then 'glass the whole shooting match.

Has anyone tried this? Does epoxy "eat" foams?

I'm also considering making forms with foam and then applying a release agent and trying to lay up fiberglass whitewater boatss.

Thanks, Shawn