I've been doing some pretty detailed machining in 4140 HT using HSM methods and it results in millions of tiny little needles. My hands are paying the price. I never wear gloves around any of the machines. I have work gloves for lifting, hauling toting and general labor, but they never go anywhere any of the machine tools, saws, drill press etc, and of course I have welding gloves for welding.
However, when I reach inside a machine to take out one of those steel parts no matter how well I think I have blown it off those tiny steel needles jump for my hands worse than a jumping cholla cactus leans towards human flesh. I've mostly done aluminum int he past I don't think I've ever gotten an aluminum sliver in my hand, but my hands have dozens of tiny metal splinters in them right now.
What's a machinist to do? Making bigger chips isn't really an option. Well for part of the job it is, and I do, but for a lot of the job it just isn't.