Fretboard radius
The radius of curvature of a fretboard mounted on the fretboard of an electric guitar.
The fingerboard is located directly under the strings, it is to it that the musician presses the strings when playing. If you look at the neck in cross section, its upper part with the overlay will have the shape of an arc; the radius of this arc is implied in this case. The smaller the radius, the more convex this arc will be, and vice versa, a large radius will correspond to an almost flat surface.
In general, it is believed that a smaller fingerboard radius is better for playing chords, and a more even, flat surface makes it easier to play technical passages with an abundance of special techniques such as bands. The average and, one might say, classic diameter value is 12", this is the most popular option among modern electric guitars. The smallest figure is just over 7", it is found in some guitars with Stratocaster bodies (both original Fender instruments and copies ). And the most flat pads have a diameter of 20" or more.
Note that there are often instruments with a variable fretboard radius — smaller at the headstock (where chords are played more often) and larger near the body (where solos are played by notes). In such cases, the radius at the nut is indicated.
Fretboard
The material from which the fretboard of an electric guitar is made.
The fretboard is placed under the strings, where the strings are pressed when played. The need to use overlays is due to the fact that the types of wood from which the fingerboard itself is made are often not hard enough, and dents could occur on their surface from constant contact with the strings. Accordingly, the overlays are made of a harder material that retains the shape of the surface even after repeated pressing of the strings. As such a material, both special types of wood (
ebony,
rosewood) and high-quality phenolic polymers can be used.
In general, the quality of the fingerboard is usually quite consistent with the price category of the instrument, but it hardly makes sense to dwell on the detailed characteristics of each material (they are not so critical for the normal use of an electric guitar). We only note that the material of the overlay directly affects the appearance of the instrument.