Dan Jennings says
This is a 400 V DC TIG set aimed at heavier fabrication and bodyshop repair where you’re mainly on steels and stainless rather than aluminium. In practice it suits chassis work, jig repairs, brackets and general fabrication where you want tidy, controlled welds rather than high deposition.
In the workshop I see it used most on mild and stainless, often on thicker sections where MMA used to be the default. DC TIG gives cleaner roots and less grinding, especially on visible or critical joints.
Two technical points matter. First, make sure the mains supply and plug are correctly sized; this is not a lightweight single‑phase unit and poor supply causes nuisance tripping and unstable arc starts. Second, set up gas coverage properly – decent torch, correct cup size and flow – or you will chase porosity and sugaring on stainless.
Common issue is running it like a MIG, with too much current and travel speed all over the place. Take time to dial in amps and ramp settings and it becomes a reliable, efficient workhorse for steel TIG work.
Dan Jennings, Senior Engineer