Skin grafts, must have been a whole lot of hot steel. That make mine look like sore. My first time with burns over this large of an area. I have had the quarter sized burn from using cutting torches overhead. It's a good story/lesson on how it happened. It was a careless error on my part. I was doing a timing belt, front crank seal/oil pump seal, tune-up on a Subaru Outback. I basically got the belt and seals done had finished with the tune-up. The only thing left was to clean the cloaking from the throttle blades on the intake. On this car it is easier to remove the battery to replace the spark plugs. So after installing the battery, its tray and hold-downs I hooked up the battery. Normally the battery is disconnected. The only thing left was the throttle blade cleaning, so I hooked up the battery, was working in that area with the tools right there. On the Outback the throttle body points back at the firewall of the car. So I have a mirror I place against the firewall and work from the front of the car. As I was cleaning the bottom of the can (outside reinforcement ring) just caught a small piece of the B+ wire eyelet that the safety rubber cap doesn't cover. This is on the starter. The side of the can grounded and created a small hole that all the "stuff" came out and ignited. I don't remember much just one hell of a roar and bright orange, I didn't pass out, but my father said the front of the car was a bright orange ball of fire. So off to the ER I went. I will admit it was my carelessness that led to this. I have done this cleaning procedure on dozens of new Subaru's (they all have the same engine layout) even with the battery connected. I'm also known as the safety police at work. I'm always wearing hearing protection, safety glasses, gloves either leather or nitrile (non latex), always using safety lock, jack stands etc, etc. So even if you do everything safely you still need to pay attention. As a note every single ingredient in that cleaner can is highly flammable. The luck that made me lucky is the can was 3/4 empty. I had a full one on the bench to finish up the job once the other ran out.
I did go to the ER but have seem a DR for wound checks. This guy practices medicine between "mainstream medicine" and holistic medicine, basically he uses what works. This guy has basically "cured" my moderate bilateral carpal tunnel with out any surgery. If any one has interest I can start a new post.