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I know a story of an ER doctor sending somebody to the hardware store for a tool. My brother also had a regular tool used during his visit to the ER. I don’t think it’s outside the realm of possibility that they simply purchased it at the hardware store. (It was a dremel with a diamond blade to remove his aircraft-grade aluminum ring from an injured finger. Let that be a warning to you about what you put on your finger.)

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Out of morbid curiosity, how'd they get it off?

Slip a super-hard, super-thin backer underneath it, then cut? (Aluminum probably being the best scenario, as far as industrial metals go)

Just cut directly. A tiny scratch and a tiny burn from the heat of the cutting disc, but nothing worse than a paper cut.

They slid a zip-tie under it for protection and another person kept it cool with a tiny stream of water.

I think you mean tungsten. Aluminum is very soft to cut. Even aluminum used in aircraft is easy to cut.

Yeah. I think you must be right.

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