I “hand” cut a lot of enclosure doors for installing small displays, pilot lights and/or push-buttons. The enclosures from Hoffman are painted steel. I’m wondering if the CrossFire devices would damage the painted surface.
@clough42 did a great video on this exact topic. He bucked all of the experts and tried it. You can see how he made out here Can you CNC Plasma Cut a NEMA Electrical Enclosure? Should you? - YouTube He’s one of my favorite youtube channels!
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There’s definitely going to be some heat affected zone.
Your slats would likely scrape up the paint on the back side.
Depending on how big of a lip is on the switch or indicator it might cover the heat affected zone.
You would have to grind off an area to place your work clamp.
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Maybe run a self tapper in the most inconspicuous spot and clamp to that?
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I’ve done it before and it works great. I disassembled the door off the enclosure and cut it. Cleaned a small spot on the inside for a pair of visegrips and connected the work lead to it. You have to really think it through when some of these enclosures are $400 or more…