I've been wanting to try my hand at a neck repair. As someone who likesGibsons, it goes with the territory. When I saw that Wizard had been given a Tanglewood with a typicalneck / HS crack, I persuaded him to let me havea go. I decided against hide glue because getting the glue right into the narrow crack would take a lot of wiggling. Hide glue gels and sets far too quickly for this.
I chose to use phenol resorcinol. This is an old school wood glue. It was used to fix the maple tops to bodies in theold LP's. The gel time may have been a problem for this exercise as well.
I am going to guess that Gearhead may know more about this glue as it is used in yacht building becasue it is waterproof & has good strength. It als sets to hard and brittle - just what is needed on an instrument.
Here are are some "before" pics.
I made a little balance to mix 5:1 parts of glue. Apparently this ratio mst be very accurate. 1 x M8 nut = 1 part.
After lots of careful wiggling and working with a icecream stick, the crack is full of glue:
Wipe - clamp - wipe - tighten - wipe etc. etc. & leave for 18hrs.
Next, the rough edge of the crack is given a light pass with a scraper & some clear nitro is inked on with a match head. This covers the line left in the repair. Its left for a week to harden and settle.
The nitro is then carefully scraped to level
Following this, a bitof rubbing compound & buffing. All that is left to do is is some finer polishing:
IMO, this guitar is now good to go & should not sound any different or be any weaker than before the break.