Back when I was a welder, I was trying to cut something with an angle grinder in an awkward position.
I guess my brain was turned off that day because I decided to grind with the sparks going directly away from me.
So of course, the disc binded, and sent the angle grinder directly at my face.
Thank god I was wearing a face shield, at least. In about 0.1 seconds, my face shield was cut entirely in half.
The fun didn't stop there, though, because I had the trigger lock on (again, genius). So it was still spinning at full force after it jumped out of my hands.
Also, I was on a ladder, so here I am, trying to throw the grinder away from my with my arms, on top of a ladder, all the while the cutting disc is going absolutely out of control essentially in full contact with my face, neck, chest, and arms.
Finally I manage to push it off of me, it falls to the floor and the disc breaks. I finally get off the ladder and unplug the grinder.
At this point, I can see that my face shield is cut clean down the middle. I'm thinking 1000% I'm gonna be needing an urgent hospital visit. I take off the face shield, and carefully touch my face... No blood... I take out my phone and use it as a mirror, not a scratch... I meticulously check the rest of my body... nothing.
Turns out, after all that, the only damage was to the disc and the face shield.
I can't even explain how I felt after that. I spent the rest of the day in an almost out-of-body experience, and was shaken for a few weeks at least. I beat myself up a lot for being so stupid, and I literally couldn't believe how lucky I was. I still can't believe it.