to be inserted through the drilled hole size
and the thickness of the core. Long cutters
Failing to use a guide plate will result in
may not be able to be inserted into small
elongating the hole in the laminate and result
diameter holes or thin core structure.
in additional damage.
(1) Determine the hole location.
An internal cutter can be made from an Allen
wrench. Sharpen the short leg of the wrench
(2) Drill the appropriate size hole through one
so that when rotated, it will cut and push
skin. Consult with the system speciic tech-
the core material 1/4 inch beyond the desired
nical manual for the appropriate hole size.
size to leave a clean hole. Make sure the
Allen wrench is small enough to it through
(3) Drill the same size hole through an aluminum
the drilled hole and the cutter is short enough
or composite guide plate.