Has anyone here ever gas welded on patches or quarters using a Cobra/Dillon/Henrob torch? I've watched the guy at the Nationals, then he let me demo his torch. I was reaaly close to buying one for $350 but didn't. He says that body shop guys use them all of the time without any heat warpage due to the concetrated flame and low gas pressures. Can even weld potmetal, stainless and aluminum. I learned to gas weld first but would never try it on my sheetmetal unless someone here can say that they use it.
Rob