Fret Slotting Jig (3/3)
Here is a spreadsheet of fret positions, mainly Fender, but others also:
StewMac has an online fret position calculator: https://www.stewmac.com/FretCalculator
The mathematical formula is:
where
- x = fret distance from inside of nut
- S = scale length
- n = fret number ( 0 = nut, 12 = octave )
I actually used a caliper accurate to thousandths of an inch to mark the locations, and pre-punched them with a new sharp punch prior to drilling. I probably got an accuracy of under 1/100", which is fine for a fretted instrument on which all tuning is approximate anyway.
Two spots you can know with good accuracy are the nut ( 0" ) and the octave ( 1/2 scale length ). Working in both directions from those datums, you can cover almost the entire neck with direct measurements using a 6" caliper.
All these measurements are typically done in inches, but there is no reason you could not use millimeters or barleycorns or cubits or any other silly system.
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