Are you looking to purchase that welder? No offense but if it’s cheap that may be fine. But it’s really not a very flexible unit. There are much better options out there for probably not much more money. Plus you’re limited to 120 volts. Dual voltages are really the way to go. If you keep that as a flux core only unit, it will barely be able to do 3/16 steel effectively . If you convert that to a mig gas unit, it will likely not even process eighth of an inch properly. So that something to think about. If you do and sheet-metal work if you keep that as your flux core only unit it will barely be able to do 3/16 steel affectively. If you convert that to a mig gas unit it will likely not even process eighth of an inch properly. So that is something to think about. With a 120 volt Machine, it effectively becomes a sheet metal only welder. Anything else is most likely past it’s duty cycle, and limited by the heat input. There is only so much energy in 120 V unit which limits the heat input into your weldment. I went through this very same thing, had a 120v went to something larger. Wish I had skipped a 120 altogether.