I know that if you want to weld aluminium with a TIG you would use an AC or AC/DC welder, But do you have to worry about the same thing with a MIG or is a DC MIG alright to weld aluminium as long as you have enough power (amps). Sorry maybe a silly question.
You use a standard DC output on mig for Ali, a lot depends on you mig set you will need a teflon liner u shaped grooved feed rollers, a short lead torch ie 3 mtr and some Ali contact tips also pure argon as a shielding gas