Adding the 6 1/2 fret to existing fretboard

Jill Tyler-Endicott
09/04/14 12:52:21PM

I have a Folkroots mountain dulcimer that was made in the early 70's. Of course it is without the 6 1/2 fret. I've spoken to a local Luthier (guitar) and he of course cannot add the fret without the correct mathematical measurements.

My fretboard is 29 1/4 inches from nut to bridge. Can anyone tell me how that would be calculated?

Or of a dulcimer Luthier near Tallahassee, FL. I don't want to be without it for a long period of time.

Thank you for any input!