Not sure, it look's good for welding thin stuff like car panel's etc, less chance of warpage etc, but i don't know how deep it penetrate's either
Theres a few with the glowing headers on youtube but theres one I think I remember where the motor explodes
The Bend Motorsport Park new video of progress to the new drag strip that is currently being built https://www.thebend.com.au/dragway