Here's a recent project involving a vintage Yamaha (Les Paul type) which the owner fitted with a Floyd (a rather unsual fit). From the look of the Kluson machine heads, this ax must have been circa '70s (maybe even '60s!). Was Yamaha already producing guitars then? (Maybe under the Nippon-Gakki brand yet.) Anyways, back to the story.....
The owner was rather disappointed with the restoration job of a known local guitar-manufacturer-store (w/stores in malls) - check out the (BEFORE) photo below & judge for yourself. Musta carry a lot of sentimental value for the owner. He brought the guitar to us for a second restore job, as the neck split at exactly the same 'restored' joint. This is the usual area where necks split upon falling flat backwards. Necks which are quarter-sawn will most often endure this type of abuse. I could not verify if this neck was slab-sawn, which I suspect it was, as slab-sawn vis-a-vis quarter-sawn is much weaker in structural strength (not mentioning the tonal the difference in has on the guitar). This is a major factor why custom guitars by US luthiers will cost a lot more - choice cuts of tonewoods i.e. air-dried for many many years, quarter-sawn, tap-tone, etc, etc...... only a very small portion of a log can make it to the tables of these known luthiers (master craftsmens!).
Thankfully the split was intact and did not fracture into smaller pieces, so the two pieces were an exact tight fit. First was to lightly brush both surfaces with a high speed steel brush bit on the Dremel to remove the oxidized surface of the Mahogany. After using one of the most expensive glues (made in Denmark) clamped under 1 ton per square inch, and about seven coats of nitrocellulose with in-between scruff sanding, the peghead was polished and voila!! Check the other (AFTER) photos.
BEFORE
AFTER
