Opinions on nut slot height needed

Add the desired string height in relation to the first fret You could take as a guidance Put together so many gauges until you reach this

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

nut slot files With normal string heights for a steel stringed guitar at the 12th fret , a nut cut to same heights

nut slot depth The ”correct” height for the slot is just high enough so that the string clears the first fret without buzzing Before you do anything to the