Stainless steel is notoriously difficult to drill. It will be hard,
and compared to the surrounding aluminum it will be extremely hard.
That is why an "easy-out" is anything but in this situation. Drilling
a small hole in the exact center of a small diameter stainless bolt
stub for a very small easy out is going to be extremely difficult and
require precise alignments, centering, and a great deal of care. If
this is the case, I would definitely leave it to the professionals.
--- In ap-gto@..., "Bob Olson" <r.olson@...> wrote:
clutch screw and into the soft aluminium casting. I believe the
clutch screw is stainless steel and it might work harden when it is
being drilled. You might want to consider having a machine shop do
wait until the AP folks get back from their Christmas holidays, and
then check with them.