Graph Tech Ghost - Manual (Page 36)

36
Using a 1/16” bit, drill the four holes for the mounting screws
in the outer most marks to a depth of 1/4”. Make these holes
perpendicular to the surface. Using a 1/8” bit, drill the inner
four marks to a depth of 1-1/8”, defining the four corners
of the mounting hole. Drill these holes parallel to each
other; in other words don’t drill them perpendicular to the
surface, as this will make the cavity narrower towards the
bottom, preventing the 13-pin board from fitting properly.
90°
90°