So I'm looking into making steel targets (spinners & gongs) and don't know how to weld AR 500 without ruining the plate from the heat. I'm using a diversion 180 and will have to make multiple passes to complete the weld so I was thinking I could make short welds and quench the part before the next pass. Or a wet rag etc to control the heat? I don't have any experience welding high carbon steel and could use some pointers. I've welded several pistol targets out of 3/8" mild steel but .223 tears it up and .308 destroys them. Any tips how to make them out of AR plate in my garage w/o ruining the steel with heat?