Andy wrote:

| Any other recommendations, either for drill bit sets or drilling
| technique?

I don't know what the pros use, but I keep a oiler full of 30W by the
drill press for drilling metals. It must work because I haven't broken
a bit yet.

The bits I've been using for the past couple of years are the HF
115-bit set - and they've been holding up well...

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/