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Permalink Reply by Dan Sleep on November 30, 2015 at 3:40pm

A lot of the tuners I use require a headstock thickness of 3/4 inch or less so the holes for the strings are completely exposed and that there is room for any bushings you might be using. Somewhere between 1/2 and 5/8 should be fine.

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Permalink Reply by John Sawyer on November 30, 2015 at 4:12pm

What Dan said, I shoot for 0.6'-0.7" when thinning my headstocks.  1/2" is a little small.

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Permalink Reply by JL on December 1, 2015 at 12:29am

The headstock thickness is dictated by the tuners you want to use.  You want the bevel in the end of the capstan (string winding post) to be proud of the bushing so that 3 to 4 wraps of your thickest gauge string doesn't touch the bushing and the bushing is not touching the shoulder of the wormgear housing. 

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