Dot action: recommended measurements for nut height and relief?

Actually the best way to think of the nut slot depth is in relationship to the string action height at the first fret and 12th fret Most

Stack enough together to reach the height of the frets, then another couple of thousandths, put them up against the nut, and file to the gauges

nuts and bolts slot 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

nut slot height The height of the strings above the 1st fret should be as low as possible to not buzz and the 4 strings should be the same height above the fret