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I've worked in shops where they used straight CO2 for MIG welding steel. It works ok, but takes considerable more flow than AR-CO2 mix. I use AR-CO2 mix in my shop because I like it better, sure it costs more than straight CO2, but it also lasts 3 to 4 times longer than the same size bottle of straight CO2. Therefore making it cheaper in the long run.
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Lincoln: Eagle 10,000, Weld-Pak HD, Weld-Pak 155, AC-225, LN-25 wirefeeder
Miller: Syncrowave 250DX Tigrunner
Westinghouse: 400+ amp AC
ThermalArc Handy wirefeeder
1 Harris, 3 Victor O/A rigs
Arcair gouger
Too many other power toys to list.
Do it right, do it once. And in all things ya get what ya pay for.
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