Well,,well,,and another well,,,,you gotta be burning very hot and have a special don't fall out the bottom joint to be making 1/2 inch welds in one pass,,,generally speaking,,most of us never weld any thing much thicker than 1/4 inch,,,did you know,,if you weld over a weld,,you trap slag,,of course you did,,,,which makes it weaker,,,,sure,,,,,heat means distortion,,yeah,,I know,,heard that too,,,but,,,,who in the **** is to busy to do a job right,,,,that mig marketer who invented this,,my machine will weld 1/4 inch in one pass,,,musta been a genious,,,,but,,,still,,thats not how you go about welding something,,,no matter how they advertise them,,,,,,thingy