In the early 80s sometime, I watched in horror as my Alembic Series 1 fell over from its guitar stand and the headstock (well, the part of the neck where the tuners are) broke right off. I was positively horrified. A drunk woman jumped on the stage on my side and ran across the front of the stage toward the guitar player (figures, right?). It was quite a scene, the headstock flying violently from the strings releasing suddenly. We stopped the set, I regained my composure, and packed the parts up as best I could. When I got home, I check with the old piano tuner in town that built his own soundboards and pin blocks, figuring he knew a thing or two about glueing wooded things under a lot of tension. He managed to glue the headstock back on. I wish I knew what glue he used, but I can't remember. We let it sit for 4 days, then we put strings on, raising them to pitch slowly. The repair held, and I played the bass for another 3 years, finally selling it to another player, with full disclosure about the repair, who played it for many years, when I finally lost track of him.