I marked the holes with a Sharpie pen, then
used a Center Punch to make a starting
point for the drill. Otherwise the
bit will want to "Walk" |
I wrapped the bits according to the
instructions so as not to drill too deep, but
to be honest, there was nothing under there
close enough to be caught by the bit. |
Drill in steps according to the instructions.
all holes start with a 3mm bit, and work up
from there. The outer holes go 3mm, 6mm
8mm. The inside holes go 3mm, 8mm, 11mm. |