Thank you all for your replies!
patprimmer, your answer worked best, here is some background for others doing a search looking for a similar solution.
I retained the wood block idea since it lends itself to
numerous different attachment methods. however I also used
a predrilled hole in the...
I originally tried to secure a rivetting pin directly into the
polystyrene, with even less success then the wood block was
providing. Hence the question remains what hanging device
can be glued onto or into the polystyrene that will not pull
out, that can be used to attach the sculpture to the...
I made a sculpture out of the 2" thick Dow (blue) polystyrene.
(the polystyrene sculpture was then sprayed with spraytex)
I have only 3 mounting points from which to hang the sculpture
from a wall. However just like hanging a painting, the top mounting
point is really taking all of the weight...