For all those with bad luck and missing fingers, I'm the guy that got the good luck, in that I never ever got a single scratch. I worked in HS and college in late 60's for a outfit that at the time probably did the concrete formwork on 50% of the high rises in So Florida. A 4x4 shore was a main stay of the process. The 4x4's were adjusted height wise by two wedge shaped 2x4's approx 12" long hammered oppositely together, to tighten/raise the 4x4 shore against the overhead slab/beam. With thousands of working employees, the company burned thru of thousands of them weekly. Thet were effectively created by cutting a 12" 2x4 diagonally end to end on the 3.5" vertical plane. The problem was the wood shop with 25 union carpenters were constantly suffering cuts/severed fingers in the process. It was very a monotonous and repetitious process. As an 18 year old I offered to take on the process. I removed the 5hp Dewalt RAS motor with a 14" carbide blade, built a custom table and slide feed assembly, put an aux fan on the motor. a fan on me, hired an associate to stack 12" 2x4's on the table as fast as 1 could cut them. Started on one end of the empty shop, and as wedges dropped off the table got to saw height, I'd back the table up eventually all the way to the door. The landlord never understood why on Monday mornings the community dumpster was always full of saw dust. The formwork company bought the 2x4's, loaned me the truck to transport, and I got a check on Monday upon delivery for few thousand dollars. I was living life large.
I shudder today about how dangerous it was with many hundreds of thousands of cuts with my fingers less than 1" away from an unprotected HS blade.
My biggest fear was a knot missing or falling out of a 12" 2x4 unbeknownst and my finger entering the open knot and would be cut it off.