In article , Ron Leap wrote:

If there were a limited number of holes to drill, a steel fabrication
shop would probably use a magnetic drill and annular cutters such as
rotabroach.

Everybody keeps saying 'rotabroach'. The mag-base ones don't get that
big. 2-1/16" or so is as big as you can run in a mag-base. They make
bigger ones, but only for mills (big shanks).

--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Mike Graham | Metalworker, rustic, part-time zealot.
|
http://www.metalmangler.com| Caledon, Ontario, Canada