Quote:
Originally Posted by Mike Bradbury
You are getting your gasses mixed up. You can use C02 straight or a mixture of argon CO2, but not O2 (that is oxygen) that is what you are trying to drive away with the shielding gas. Pure argon is used for Aluminum but a 75/25 mix is sufficient for SS. There are all kinds of trimixes that are available for these welders but I tend to stick with the basics for normal everyday welding.
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Your right, I meant CO2. I actually did an experiment with 75/25 mix on mild steel at work yesterday. It works okay, but the pure argon works cleaner and not as much sparking if you will. I am probably going to just get the mix so I can switch back forth with the mig and tig. It will be next week more than likely (Deer rifle season this weekend!)
Thanks, Mike for your advice.