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Posted by Ernie Leimkuhler on August 8, 2007, 12:11 am
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> An 80 of 75/25 is around $65 where I live. A 20# (IIRC) of CO2 is $21.
>
> I've been welding hundreds of hours with a MIG, maybe into the thousands. I
> do notice that the mix leaves a prettier bead. But, is it worth the extra
> money? Most all I do is thin tube. If it's thick, I pull out a rod, and I
> am getting my first roll of innershield to try on items where pretty don't
> matter. (I always liked the look of a 7018 on anything thick.)
>
> When I had an ornamental metal business, I used CO2 exclusively, and it was
> fine. I bought one tank (a big one) of mixed, and never bought another, as
> the only thing I noticed was a narrower prettier bead. And a lot more
> money.
>
> Please tell me your opinions. Where's mixed better? Where's CO2 better?
> Is there enough difference to justify three times the cost? Only downside I
> see is buying a cheap CO2 reg.
>
> Steve
You pretty much summed it up.
Prettier bead, with less weld spatter to clean off.
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>
> I've been welding hundreds of hours with a MIG, maybe into the thousands. I
> do notice that the mix leaves a prettier bead. But, is it worth the extra
> money? Most all I do is thin tube. If it's thick, I pull out a rod, and I
> am getting my first roll of innershield to try on items where pretty don't
> matter. (I always liked the look of a 7018 on anything thick.)
>
> When I had an ornamental metal business, I used CO2 exclusively, and it was
> fine. I bought one tank (a big one) of mixed, and never bought another, as
> the only thing I noticed was a narrower prettier bead. And a lot more
> money.
>
> Please tell me your opinions. Where's mixed better? Where's CO2 better?
> Is there enough difference to justify three times the cost? Only downside I
> see is buying a cheap CO2 reg.
>
> Steve