Originally Posted by reddogracing
does better on metal that isn't perfectly clean.
Even the best MIG is going to require very clean metal, not so much a problem on thicker material but an absolute must when working with body panels. Just tiny specks of paint, rust, seam sealer or dirt is going to cause blow-through and all too often the machine gets blamed! If you are having trouble with TIG because of less than clean enough metal then you will still have the same problem with a MIG regardless of the machine's quality.