15 years ago
I need to cut about two-dozen square 5/8" holes in cold rolled .187"
thick steel bar. I'm thinking that broaching would work, but was
surprised that a 5/8" broach would set me back $300. The holes need
to be square and fairly precise. The .187" CR steel is too thick for
my whitney foot punch to get through, so I'm kind of at loose ends.
Have I overlooked some other alternatives? Is there a source for
cheap square broaches anyone knows about?