When I ran printing presses, pressmen/women, always were missing fingertips, if not whole fingers. 99% of the time it was from wiping the press with a rag while it was still running to save time from turning the press off , and turning it with the hand crank and wiping that way. I never did that - EVER. Never lost any fingertips either!! Same concept, no rags near running machines that spin fast, no sirreee.
They would think it was "cool" battle scars, I would look at them like they were dumb, saving five seconds to lose a finger. Some of those presses can take off lots more than your finger.
I was always the one who put the safety guards back on the machines too after some idiot took them off, maybe I'm a nerd like that. I'm a safe nerd. *shrug*