Radiused Fingerboard Gypsy Guitar

pdg · September 27

Fenders have (or had) "compound radius" fretboards -- smaller at the nut, larger radius at the body. Goes along with neck width, which increases as you go from the nut to neck.

paulmcevoy75 · September 28

I'd have to check my cad file but I think mine is 12-20 compound, it might be 10-20.

I'm not great with math, or thinking in general, but I think Dan is saying here that to get the best possible action you need a compound radius. It may be that most boards end up something like a compound radius after the frets are dialed in, regardless of what the board is doing (as fret height is variable per string from fretwork while the board is more consistent.

https://www.stewmac.com/video-and-ideas/online-resources/neck-building-and-repair-and-setup/compound-radius-explained/