Don't tool and die makers work around machines that can snatch off a finger by a ring?
They don't wear neckties when using a lathe either.
My granddad started as a T & D man. Had a story about a guy in management that came down to help demo a new lathe. His tie got caught and started to reel him in. The only thing that saved him was it was a cheap tie and he push back strong enough to break the tie. That would be scary!