Been welding MIG (solid and flux core-[no Innershield gasless-sod that!]) for a few years . Have recently taken up low hydrogen MMAW. Folks, if you understand travel speed, arc length and volt settings, and have good technique, YOU CAN WELD ANYTHING! Easy peasy. I'm doing a course to get accredited, then I'm off to help build two Australian war ships in the Newcastle area of NSW. Can't wait to get on site! Bring it on hippies!