7
Looking for heavy duty knockout punch
(lemmings.world)
Tools of all sorts are welcome. They include hand tools, power tools, automotive tools, welding, etc...
Not if it's well lubricated.
I've cut hundreds of holes, and did not loose a blade in the kit.
As crude as they are, holes saws will last a long time and cut through a fair deal of depth material.
Anchor lube or tap magic are your friends
Yes but have you done it on 316?. That's a whole other animal
Mostly 304. Electrical enclosures.