Didn't want to bump Doug's question about welders off topic too much, so thought I would start a new post. Given the cost of a bigger 220V welder is sometimes out of the price range for some of us...and the reality that 90% of the already limited welding some of us do is 1/8" or less....multiple passes is the reality for welding thick stuff. As I struggle with multiple passes, any good tips people could pas along? From my limited and somewhat (un?)successful experiences: Obviously the voltage goes to max setting, but I have trouble not overfilling the work gap. I am thinking I get better results when I slow the wire feed down quite a bit...and as I feel like I need to move along the work slowly to ensure I get enough heat and penetration, it seems like I end up filling the weld, and I have to grind some of the weld fill out to make a second pass....Am I on the right track? I have definitely found that it helps to pre-heat the work a bit with a torch - for the 3/16" sliders I made, I got solid, single pass welds (on the bottom flat/butt joint) even with my small machine rated to 1/8". I wasn't so successful on the top 90 degree joint, and had trouble with trying multiple passes.