I need to weld 1/16 inch thick mild steel square tubing, the harbor freight welder i have has a high and low setting. the high is 125volts the low is 60 what combanation of wire thickness and voltage would help me create a slow weld? would a larger wire and a lower voltage and a slow feed rate help me with the thin material? im looking for any and all advice for working with thin materials.
I hope you mean 125 amps and 60 amps output. What are your choices for wire speed?
I would weld it with 60 amps and .023 wire. First you don't want a slow weld. You want a steady weld that sounds like frying bacon. When its right it sounds smooth and steady. If it sputters then you need more heat or less wire speed or more wire speed.
I have to state this again. Make test welds on scrap material exactly like what you need to weld. If you need to weld the 1/16'' steel tubing then practice and set up the welder on the same material. If you adjust travel speed, wire stick out, amperage and wire speed you will see a difference. All of these things affect weld quality. Try each one, one at a time to see what it does for you.