How to Switch a Multiprocess Welder From MIG to TIG Using the Longevity MTSPro 252i by kcaron | Dec 3, 2014 | Longevity Tools, TIG Welding, Videos | 0 How to Switch a Multiprocess Welder From MIG to TIG Using the Longevity MTSPro 252i, a free how to video by Kevin Caron. Read More