If you're not familiar with the shop tool space: A band saw or a table saw can chop off a finger (or three) and surgeons can reattach them. It's very skilled work but you have good odds these days, especially if you've been socialized to put the finger(s) on ice and go to the ER.
A hammer press or a grinder, or a few other tools will just take your finger away.
A hammer press or a grinder, or a few other tools will just take your finger away.