I have been welding for about 30 years now.(with about 20 minutes of instruction). Mostly trial and error and I weld to suit myself. I started with a Buzz box. I worked my way up to a sears AC/DC unit because I weld mostly Stainless now. I enjoy the fact that I can go out to the garage and fabricate something, fix something by welding it or remaking something out of ss so that it does not rust.