If you're going to stick around I'd recommend getting less salt in your diet. Second hand exposure to a machinist is enough salt to shut your kidneys down four times over.
Then there's this. OP was likely doing a production run bored out of their mind, taking the likely victims of 3 crashes and wishing they had some black vinyl for a backdrop. I swear, if most of us didn't have NDA's, there'd be a constant stream of this kind of stuff. When you sit there for 10-12 hours a day making the same thing, you get creative. There's an entire drawer in my box dedicated to interesting ways I've seen an apprentice really screw it up.
That's certainly a lot of machinists. I'm not production, about half my job is maintenance. Half my job is making parts. And half my job is screwing around.
Are there's still manual production runs in the first world? The one machinist I know IRL does manual stuff now, but it's all bespoke, and his colleagues sound like they might not have heard of CNC.