It's pretty impressive so far, use a surprising amount of current on 10-12mm steel but it's getting super penetration and would cope with probably 18mm comfortably, not sure about much more than that. Thankfully it's very easy to set up as the manual is absolute fire lighting material. I had one wire jam on it, easy enough to fix but it took a bit of setting back up on the tensioners to stop burn back afterwards. I'm very happy with it so far and with any luck it will do decades of work. Plasma cutter is super too, cuts at an angle though if you run along a guide plate, must affect swirl. Easy to compensate for though and makes a cut as neat as your shaky hand can do!Any pics of your welder? Are you pleased with its performance?