I'm practicing welding aluminium (I did a search but couldn't find a specific answer, sorry) and sometimes I get it, sometimes I don't- hence the need to practice! I am using a spool gun with argon on a cigweld 185. At the moment I am practicing on 3mm square tube (rounded edge) and the weld seems to "pile up"- coming up in lumps. I've tried increasing and decreasing both amps and feed. Any ideas?

Cheers,
Mark


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