"Terry Coombs" wrote in message
...
On 7/17/2019 10:04 PM, Jim Wilkins wrote:
"David Billington" wrote in message
...
On 16/07/2019 05:46, Gunner Asch wrote:
While I love annular cutters for use in the lathe and BP the 3/4"
shank may be a problem for the OPs requirements so a simple hole
saw
such as a Starrett bi-metal hole saw would be more than adequate.
Such as
https://www.amazon.com/HSS-BI-METAL-.../dp/B01DO4WNA8
.

Hand-held hole saws up to 4" worked well enough for me when I was
installing conduit into steel control boxes. Use a slow drill, like
500 RPM.



My wrists won't take it any more ...

--
Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !


IIRC the magnetic-base drill wouldn't hold reliably on vertical
painted sheet metal and the hydraulic Greenlee hole punch was even
more heavy and awkward than the D-handled Milwaukee drill and hole
saw.

That was one of the difficult manual metalworking tasks that prompted
me to buy a milling machine.