Hey I have little Lincoln weld pack 100 and I have welded up some good size stuff with it and it is still together.I also have a buzz box ac welder and it has seen little use since I got the little mig.These little units will weld more than just light sheet metal Bob HotAnvil Forge http://www.geocities.com/hotanvil http://members.tripod.com/hotanvil_forge (NEW SITE)