Quality Control Just wanted to double check my fret slot spacing before I start pounding in frets. I don't have a fool-proof method for cutting the slots, so wanted to be sure the slots were still good after sanding in the fret radius. I aligned my scale, took my measurements, then pulled out my print for comparison. Was happy to see no slot was off by more than 0.01"! This is not to say my way is the best way to cut slots, just saying that it can work. ...particularly if like me, you are suffering from jig building fatigue.