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For those who arent familliar with gas terms,He's talking about 95% argon and 5% co2...Costs a little more but you end up with a much cleaner weld, plus it allows the weld to ''self clean''Another beneifit is ''Gas quality'' is closer regulated...C-25 can be as much as 40% CO2...Ever notice the color of welds from tank to tank, and between company to company?
So how are you planning on sealing the half together?