Using CO2 for MIG without a flow guage

My CO2 regulator came that way. It's graduated in cubic feet and liters per hour, and marked "Argon use .032 orifice".

jsw

You could time how long it takes to fill out a trash bag inside a small cardboard box.

I go by the look of the weld. Too little flow is obvious.

jsw

I got email from a fellow with the same setup. He's using 1.5 - 2 psi and that's what I'll try. I just need a setting to try this with. I can get more accurate later if I like it.

Bob

When I bought the MIG the dealer threw in a short adapter to connect the regulator to the CO2 tank. I don't see any markings on it.

jsw

That would be the way to go. For my trial it's really kludgey and I wouldn't want to actually use it that way.

Thanks, Bob

My regulator came with a fitting that fits a C25 tank plus a short adapter to hook up to CO2 . Not at all kludgy IMO .

I meant that the way that I have my trial hooked up is kludgey.

Now I feel slighted: why didn't my Lincoln-with-regulator come with a CO2 tank adapter.

The store owner remembered it at the last moment. If they don't connect the regulator to the tank they won't notice the CGA580 (inert gas) regulator thread is different from the CGA320 on the CO2 cylinder.