AC/DC TIG welders (and less common AC only) are suitable for aluminium welding and really is the best option when it comes to buying a TIG welding machine.
Things to look out for are;
is there a pulse feature? Most now have pulse.
Can it be used as MMA?
Does the machine have a High Frequency (HF) start? And,
Is there a digital display?
Of course there is lots more to consider but these are a few bits that get forgotten about.
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