How to cut slots into a blank guitar nut without files

Filing Nut Slots With Torch Tip Cleaning Files: Has anyone tried this nut slot files Guitar Nut Files · 13 Sizes Guitar Nut Slotting File Saw Rods Filing Repair Tool Luthier Kit Bridge · 4 String Bass Guitar Nut Files 45-105 Gauge nut slot files set of 8 nut files LT-1020-000 Nut File Set

nut slot height nut files, as in if I want a slot for an 008 gauge string would you use a file etc, that kind of thing? Ultimately I want to get the nut slots spot