shortscale maple fretboard with 21 fret slots and nut slot

Japanese Fret Slot Saw 120mm Length Width fret slot width Take a fret out, measure it There is also depth of slot to consider fret slot width I would also say the curves are the right way for manufacturing As the tang width of a fretwork is something about a 3d tool path

fret slot saw Set the ball bearings to the height and width of your saw · Make sure your fretboard has an even bottom and top · It is preferred to have the side that faces