Hey guys, Anyone here that's savvy with Plasma cutter work, please advise. I just picked up the Harbor Freight 95136 plasma cutter for some simple sheet metal cutting (trans tunnel) and minor other work on my car. What I am not sure about is on page #9 lower left side of the manual it says to ground the Plasma Cutter itself to a working table or some electrode. http://images.harborfreight.com/manuals/95000-95999/95136.pdf Is this a 100% of the time thing I need or is it only when I can't make use of the grounding clamp to clamp to the work piece ??? Also, I read some guys had issues with getting a ground on a car, probably due to the tires insulating it too much ....I dunno. So how would I go about grounding this thing to the earth properly ?? Wire the rear of the chassis to a big steel rod and shove it into the ground ??