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Re: Just purchased Miller Challenger 172 welder
Posted to Tool & Equipment Forum on 3/22/2017

Good choice. That will push .035 wire well also. As far as tips 1:use C25 (argon/Co2 mix), as a beginner it makes a much smoother weld than Co2 alone. You will need pure argon if you weld aluminum with a spool gun. Use American made, name brand wire. Keep wire... Login to read more.