Quote:
Originally Posted by JFP in PA
They have a lot of automotive uses; if you are faced with creating an opening in a metal panel, say a bulkhead, for a wire/cable or tube to pass thru something like a firewall or bulkhead, drills tend to "pull" on the metal, distorting it, which often requires going to a hammer and dolly to beat it flat so that a cable gland can seal it weather tight again. Rotary broach tools cut a flat, undistorted opening of whatever size is required in a single move, just run a deburring tool around the hole and install the cable gland and you are ready to make a weather tight pass thru with minimal time and efffort.
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Dang. 2 days ago, I’d never heard of these, and now I gotta get me a set!
Conceptually not all that different from the holesaws I use in carpentry and much quicker than what we used back in the day, which were Greenlee knockout punches (drill a pilot hole, thread the two halves of the punch together thru the hole, and then pull the two halves together).
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