As far as I know it has never existed.
In theory it could be done, but nobody has bothered to.
If you want to MIG aluminum, you will need at least a 220 volt MIG
machine, like a Miller Challenger 175 or a Lincoln SP175.
Price around $625.
I have a Lincoln SP-170 that I bought used for 400 bucks. I used it for
aluminum all the time. I have a teflon liner keep everything 0.045 except
the wire which is 0.035 and use 75argon/25helium. I have built hydraulic
transom brackets that raise an lower 250 hp outboards 2 feet fo commercial
fishing boats, aluminum cranes for fishing boats, an aluminum boat etc...For
the transom bracket I welded 1" plate to 1/2" plate with no problem. The
shops and pros all told me I had to have a 250+amp machine with spool gun.
It almost seems like a conspiracy to keep do-it yourselfers out of the
aluminum welding buisness. Go get a machine like mine and go to it. Don't
even think about anything less than 170 amps though.
I just bought a Lincoln SP175 Plus and it works fine on aluminum.
Never seen aluminum flux core wired though. I'm not knocking Millers
equal the Millermatic 175, but the auto wire feed sensor sucks big
time on it. I tried nboth of the welders for a couple of says each
before I decided what one I wanted. Lincoln was the choice.
Around this area they go for close to $700 most of the time new. Alum
feed accessory is optional and costs about $50 additional.
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