Nut slot depth?

Nut string binding nut slot depth To measure proper nut slot depth? Cut a pencil in half so one side is flat Lay it on the frets w the lead facing the nut Run it over the nut slot depth With normal string heights for a steel stringed guitar at the 12th fret , a nut cut to same heights

nut slot height To cut nut slots I start by setting feeler gauges for the height of the 1st fret + , that seems pretty safe to avoid cutting too deep, and then I lower