This Martin 000M came in with this cracked peghead. This particular broken neck was not completely separated, and came in still strung up and under full tension! If you have a break like this, please loosen your strings immediately so as not to make the situation worse. Fortunately, just about all of the wood was there and mostly undisturbed, so it was a pretty simple matter to get it glued back together. I used hot hide glue for this repair.
Warming things up under a heat lamp. This will give me more open working time to get the glue down in the joint before it gels up.
All clamped up! Never enough clamps!
After the clamps have been removed. Not bad, considering no finish touchups were done.
Another view of the repaired area.