Thanks guys, I dont know how I have managed to never hear or read about this! Did some research and scared the hell out of me! Thankfully that was the first piece I did with the brake cleaner and it is not my usual routine. It was just handy on the bench. The piece sat for a day or two after I cleaned it before I welded it in the car and it was wiped completely dry wit ha clean rag. I always turn on the garage ventilation system before I weld too so hopefully I'm ok.