Douglas and Sturgess has it. they call it Adapt-It. I think it is
about $18.00 a pound in little pellets (they also have sheets of
it). I use the pellets all over the place... for handles, hammer
heads, repairing broken glass frames in the field (looks lousy but
works great!!!) and all sorts of other things (let your mind
Douglas and Sturgess is in San Francisco, CA, they ship and they can
be reached at 888-278-7883 (art-stuf). Lots of other things too.
See if they have a catalog to send you.