Quote:
Originally Posted by legion
I'm thinking of getting the Lincoln Invertec V155-S. Anything I should know about that?
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Chris, the inverter tig welders are awesome for welding thin steel and stainless steel, but they are DC only, so welding aluminum is not possible. My Miller Econotig is both AC and DC output, so it can weld both. At times I wish I had an inverter type welder, as a friend of mine bought one a couple years ago and it will weld thin stuff a bit easier than my Econotig due to the fact that the current can be set much lower than my econotig. If I never needed to weld aluminum, I would opt for the inverter tigs.
FWIW, the econotig does a beautiful job on .035" thick steel tubing, but takes some concentration to weld .025 and thinner steel. One can fake it out a bit by winding the ground cable around a steel pipe to rob some current. My airplane's tail feathers are made from bent .025 4130 steel welded to tube .035" steel tube and one has to be very careful to start the arc on the heavier tube or start and or immediately melt a drop of filler rod on the sheet steel raw edge to create a heat sink, stop, then start the weld up paying close attention to adding filler and keeping the arc concetrated on the heavier section. IOW, lots of practice till it becomes natural.