On Sun, 29 Oct 2006 12:18:45 GMT, Gene Kearns
wrote:

Solid carbide drill, slow speed, *extremely* rigid set-up (in a
milling machine or the like), heavy coolant, and *lots* of
patience.....

I was speculating that it must take something like that. Always
wanted to have a milling machine, maybe I could cost justify it if
broke more bolts and easy outs. :-)