Optimal depth of guitar nut slots

Dot action: recommended measurements for nut height and relief? nut slot depth For the treble strings, the strings should be just deep enough in the nut that they don't pop out when bending strings If you feel the strings nut slot height I overheard a conversation where a luthier mentioned that nut-slot depth might affect how the string sounds Specifically, he was cautioning

nut slot files nut slots down to their final depth The final depth depends on the guitar Getting the nut slot depth right is really important Most mass produced