Hi all,
I've got a 180 A stick welding set, but it's AC only. I may want to weld stainless in the future, but am unlikely to want to weld aluminium. (Okay, I'm thinking of building a coffee roaster when I've finished the phase convertor project, and it would be attractive to build it from stainless). I've heard that you need DC TIG to weld stainless, is that right? I know where I might get an add-on TIG unit for my welder, but the guy said it was suitable for aluminium only.
So here are the questions. If I want to TIG weld stainless, must it be DC TIG? If so, is it possible to get a small add-on unit which will rectify the current from an AC stick welder and enable it to be used for DC TIG? I don't have a picture of my welder, but it's pretty similar to this one I saw on eBay recently:
Suggestions would be appreciated.
Chris