I bought a mig welder about 10 years ago to try to do some bodywork on my Beetle but found it very difficult and never got further than burning holes etc in test pieces of metal. Have blown the dust off it recently encouraged partly by looking at some of the info on this website and have purchased a welding helmet from weldequip. Unfortunately the most useful thing I've manged to learn so far is that I will be bankrupt before I learn the technique using disposable gas bottles.