Filing a Guitar Nut Slot, Adjusting String Height at the First Fret

Nut Action Height Adjustment ELIXIR Strings nut slot height John Carruthers shows us the proper way to adjust the nut on a Stratocaster This video is step nut poker 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  They say the nut slot height edge of the gauge is very thin so it should fit any slot We'll see But the tool has other funtions