Jul 14, 2015 · 1 – Saw Kerf. The kerf of the saw is the cutting width of the blade, so it determines the thickness of the slot you will cut. The saw you use, and the fret slot you create, needs to be properly fit to your fret wire for a snug, not too tight or too loose fit. Most fret saws will cut a slot that is .023” wide which is perfect for most fret wire and is the starting point for great guitar ...
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