I am sorry, I know I have seen a thread about this before, but I am unable to track it down. I have a broken headstock and have decided that epoxy is my best option since the pieces have been glued before, so there is contamination. What epoxy is recommended for this repair? Thank you.
Permalink Reply by John on October 4, 2011 at 8:51pm
Epoxy isn't necessarily the answer... lets say the carpenters glue that was used the first time had a shear pressure rating of 2800 lbs and the epoxy has a shear pressure rating of 5000 lbs and you strings pull 160lbs. The math would suggest you need a better cure. For me new wood across the crack is the best cure. Not dowels, it's never dowels. Post some pictures.
Thanks John. I don't have pics at the moment, but it is a pretty nice long crack. There is very little residue of the old glue job and I have cleaned it pretty well, but there is some missing wood, so I am looking to do a little gap filling as well as just gluing. And yes, I completely agree about the dowels, I do plan on putting a new peghead veneer on as well.
I would just glue it with titebond clamp it good and leave it over night and use the over lay on both sides if posible after depending on were the brake is.Bill.............