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You get what you pay for on MIG welders. Gas is the ONLY way to go. I have a 30 year old Lincoln that works great. Find a used one on Craig's Lists.. I hear that some of the new MIG welders use a 120 Hz Cycle, which translates into less sputter, smoother and better penetration.... look around for places to fill your tank. I was filling up in the Big City of Columbus OHIO, and it was costing my around $50 to fill my tank......I found a farm equipment parts holeinthewall shop about 3 miles from my house in the country and it only costs me $17 with tax now.... that's the 75% Argon 25% CO2....
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