Loosen the sixth and the first string and put them to the side of
the nut. Cut notches for the two outer strings 1/8” (3mm)
from the nuts end using a fine saw. Deepen and round the bass
string notche with a proper nut file so that half of the string
lies in the slot. The thin treble string is just placed in the
notch made by the saw. Arrange the remainig four strings at the top
of the nut so that the distances appear equal (i.e. put the thicker
bass strings slightly more apart and the treble strings a bit
closer together). Mark their position on both sides with a sharp
pencil. Notch and file the remaining slots so that the tops of all
strings are at an equal height.