Sorry if I gave the wrong impression. I don't advocate throwing goo
out. But a solid ball of plastic resin should be pretty much inert in
a landfill, and probably not against any regulations either. If it is
still gooey, that is another story.


I'm not proposing throwing out hazardous material, I'm saying that if
you were to mix a fresh batch of resin and mix in a mass of old, jelly,
it would cause it to all turn into a solid.

Works well with polyester, not so well with epoxy.