I was cutting a seat frame with a plasma cutter and a spark went in the open box. A brand new B&M shifter was in the box. Well I didn't know it and was busy cutting then I smelled plastic burning. That spark had set my new shifter on fire. It burned all the plastic and paper. I was able to put the fire out with some water before it caught the garge walls on fire. OH I called B&M and they sent me the replacement parts for free. So it was not all bad. I don't use the plasma cutter in the shop anymore only outside. It throws sparks alot more than a torch or welder.