Have just used it to dress frets on a new build, and the machined ridges in this file do not cut well.
Sex Lube Personal Premium Water Based Lubricant Long Lasting Natural Feel 9oz
Mar 31, 2021
A must-have for around the house...
Great stuff at a great price. Will buy more eventually
10pcs in 1 Guitar Fret Nut Saddle Slot Grinding File Set Luthier Repair Tool
Sep 05, 2020
Not suitable for luthier work
Not suitable for luthier work, unfortunately. Grit is too coarse, and file too thick for nut or saddle work.
Could be useful for other operations where a course grit is required.