While working in the Masi shop in California, in the early 1980s I was doing a frame repair.
I was replacing the right chainstay on a Masi frame. I had removed the damaged stay and was preparing the frame to receive the new one.
I stabbed my forearm on the sharp point on the bottom bracket shell, and hit a main artery. It was quite spectacular; blood spurted out in a two-foot jet, pulsating to the rhythm of my heartbeat.
I stuck my thumb over the wound and applied pressure, while I was driven to the hospital. On arrival, I was placed in a wheelchair and taken to the emergency room.
I sat there, waited, and waited my thumb still pressed tightly against my arm, afraid to let go, or I would surely bleed to death.
I finally did see a doctor, after about an hour. I took my thumb away, there was no blood, and I could barely see a puncture wound.
Extremely embarrassing. The doctor stuck a band-aid on it and charged me fifty bucks. A lot of money back then