Anytime you heat epoxy you degrade it to one degree or another, depending on how much you heat it. I don't know how much that effects what y'all are doing here, just throwing it out as a general precaution.
I've broken apart pieces of wood by hand that were glued with hot epoxy in an effort to disprove what the West System guys warned us about. After that I took heed to what they said.
Absolutely correct! Epoxy 101...
