In article , "Magnusfarce" wrote:
Just got a replacement front door, the usual Stanley steel type. I want to
put one of the oversized peepholes in it that rquires a 1 inch hole. What
is the best way to make such a hole? I'm assuming the good old spade bit
won't work, and my little cup saw/drills won't like the metal either. Any
advice?

Get a hole saw that's made for cutting metal.