# Fretboard Radius?

Discussion in 'Basses [BG]' started by paniak17, Apr 25, 2004.

1. ### paniak17

Mar 19, 2004
Northwest, Indiana
What do they mean by the fretboard radius?

ex: FRETBOARD : Pao Ferro (9.5&#8221; Radius/241 mm)

this is from an Fender American Jazz V.

2. ### BillyB_from_LZSupporting Member

Sep 7, 2000
Chicago
The curvature of the fingerboard is an arc taken from a circle with a 9.5 in. radius (the distance from the center to the actual circle).

Many basses have flatter fingerboards than that (i.e. greater radii).

Does this help?

3. ### paniak17

Mar 19, 2004
Northwest, Indiana
So is mine very flat or very curved or about average?

4. ### Finger Blister

Jul 8, 2003
At 9.5 yours has a average curve.
7.25 would be considered very curved.

I like mine flatter: 20" (ala' Warwick)

The measure of the curvature of the top of the fretboard from edge to edge, is often referred to as the "neck radius". The fretboard radius can be found by first drawing a circle with a corresponding radius, (the "radius" is the distance from the center of a circle to its outer edge), and then cutting out a portion of that circle corresponding to the width of the fretboard. For example, if you have a 7 1/4" radius fretboard. You could tie a piece of string to a pencil, measure out a length of string to 7 1/4", and put a thumbtack on the other end of the string. Secure the tack, stretch the string, and draw a circle. By cutting out a piece of that circle the width of your fretboard, you will have an example of an arc with the same curvature as that of your fretboard radius.