Surfacing and patching extruded foam


DALDEI

Member
I'm building bench-work based on slabs of extruded foam in wooden frames. So far its working extremely well. However the foam is never perfect, it gets dents, chips etc. Plus where I am connecting 2 sections they dont always line up exactly. I'm sanding away high spots and connection joints so they are flush, but there's gaps and such to fill.

Any suggestions on what to use to fill this ? I'm thinking common Spackleing, but maybe silicon caulking ? I want to fill in any gouged areas, and build up the sections that connect. Ideally it should be something that can be painted and glued over, and something I can cut easily so when I fill the gaps between 2 sections I should be able to cut the cap with a knife so they can separate smoothly.

Ideas welcome !

Thanks
-David
 
I used sculptamold both as a filler and a finish coat over foam. It's a hi-grade papier-mache and is very easy to work.
 
I just used latex caulk for filling the gaps. It's amazing how many uses you can get out of that stuff.
 



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