Guitar It is flat on classical guitars and slightly curved crosswise on acoustic and electric guitars. The curvature of the fretboard is measured by the fretboard radius, which is the radius of a hypothetical circle of which the fretboard's surface constitutes a segment. The smaller the fretboard radius, the more noticeably curved the fretboard is. Most modern guitars feature a 12" neck radius, while older guitars from the 1960s and 1970s usually feature a 6-8" neck radius. Pinching a string against a fret on fretboard effectively shortens the vibrating length of the string, producing a higher pitch. Fretboards are most commonly
Chapman Stick carbon fiber. Today, they are made from laminated hardwoods (including padauk, Indian rosewood, tarara, maple, wenge and mahogany), and laminated bamboo, as well as graphite. In contrast to the guitar or bass, the Stick is set up with very little relief in the fretboard. It is very flat compared to a guitar, which has a slight bow. Combined with a long scale length, stainless steel pyramidal fret rails, very low string action, and very sensitive pickups, this setup is advantageous to the tapping style of play. The rear surface of the instrument is not curved like a guitar neck, but