Thanks you guys for the advice, it seems the DC TIG welder isn't the best for the job so I will attempt to return it, however I spoke to the store before I posted on here, they called Forney themselves to say I had questioned its ability to weld on DC only, Forney said it was fine to TIG weld alumin...

So I need some advice on what machine is the best for me, I want to " have a go at TIG welding" . I've welded for years, oxy accetalyne, stick and mig, and manage quite well always bee quite happy with results. I'm want to try TIG stainles steel and aluminum, just really od parts for motor...