I am soon to start building a DanH design tailwheel tug and need to weld up the square tube frame. I have a Lincoln 175 square wave TIG/Stick welder but during recent attempts to weld a couple of 4130 tubes on my Champ project I obviously really suck at TIG welding. After looking at youtube videos it seems that flux core welding may suitable and somewhat easier and the units are not very expensive. Interested in the collective thoughts and recommendations. (BTW I had an expert TIG weld the Champ )
Figs
Figs