Most epoxies begin softening and breaking down between 160-180 degrees F. A few will hold out above 220 F, but I believe most all will soften below the scorching point of walnut. Careful heating and scraping the residue without damaging the mating surfaces may get you where you want to go. Sounds like some doweling or extra reinforcement may prevent a third trip down this road. Just wondering though, are you sure it's Acraglas?

Voting for anti-gun Democrats is dumber than giving treats to a dog that shits on a Persian Rug