This is the saw I use for cutting fret slots - a Zona 35-380 dovetail saw. It has the correct kerf of 0.022" for a fret slot, and has an 8" long blade, is long enough to work with my slotting jig. ( StewMac's saw is 0.023". ) The spine on the back engages the jig to set the cutting depth. Well, actually, I got the saw first and built the jig around it.