e
Thanks. I wondered about that (whether the enclosure door could be situate d properly in a press). Clearly, I know just enough about mechanical to be dangerous. :)
The shop guys found a knock-out punch on McMaster-Carr that might work, sim ilar to the D-sub hold punch that Martin mentioned earlier. This one cuts just a thin slot with no D-shape to it. (Thin being defined here as 13mm x 41mm, IIRC?) Bigger than required, but I guess you need that minimum widt h to accommodate a suitably strong pull bolt.
Several of the reviews for this particular knockout punch, when used on 14- ga steel, said it broke on the first use.
So, I'm concerned about it - but then I have also learned to discount what some reviewers say because maybe they don't know what they're doing. Plus, our application is for 16-ga, not 14. Another concern I have is that the knockout punch might chip the powdercoat on the inside door finish? (which , we could live with, after touch-up). I'll report back on the results.
I'm not sure the approach is viable long term. First, it's labor (though m aybe the minimum by-hand?). Second, if the knockout punch approach can onl y do say.. 10 cabinets before it dulls, or breaks, that's not cost-effectiv e.
And third, the Hammond Mnfg. EJ1084 cabinet says it's 16-ga steel (and I'm sure it is...), but it sure feels heftier than that when you get it in your hands and compare it to a known sample of 16-ga steel.