Aluminum welding: Spool gun advice?

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The Artist formerly known as Turbo84
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I'm getting more interested in trying out a spool gun for some aluminum welding. Anybody have any experience with these and some advice on what to look for or look out for?

Thanks.
 
I'm getting more interested in trying out a spool gun for some aluminum welding. Anybody have any experience with these and some advice on what to look for or look out for?

Thanks.

I know this is a million years after the original post, but I have a Miller Spoolmate 100 and I run it on a Miller 211 auto-set. They just blow right through anything thinner than 14 gauge and you're limited to nothing thicker than 3/8". You have to use 100% argon shielding gas, and buy a bunch of extra tips. I had a hell of a time getting it dialed in and went through two packs before I could even lay down a bead.
 
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