We sell closed cell Pu foam to a number of taxidermists it isn't cheap but we occasionally have off-cuts.
Type: Posts; User: spada
We sell closed cell Pu foam to a number of taxidermists it isn't cheap but we occasionally have off-cuts.
If you've had no luck you could try Domestic home insulation and commercial insulation, using polyurethane and foam spray
Disclosure I do have links to this company