Its a spa day manicure with my fingernail sanding machine ... well not really.
I am actually shaping the bone nut ... but as a side benefit the belt sander also does a most excellent job of sanding fingernails, albeit in the most unexpected times ;(
The new nut is a near perfect fit:
Compensating the saddle:
Hand reaming the bridge pin holes:
Reaming the tuner holes:
For the Gotoh 510 open back tuners:
Installing tuner bushings:
With a really high tech bushing press I made 25 years ago from an old broom handle, threaded rod and a wing nut. My dad always said that "Necessity is the mother of invention"