Hi,
The other day I was welding 20mm by 30mm and 2mm thick angle iron bars to each other. The resulting thing will be a frame to place my table saw on. I have used 3.25mm 6013 rods with a current setting of about 125 Amps. But when I started to weld the 30mm side of the bars, the first 15 or 20mm was good, but then I was consistently burning a hole through the wall of the angle iron. So I started to weld in two steps. I first weld
15mm, let it cool, and then weld the remaining 15mm. This worked out quite good. The only disadvantage that I have noticed is of course the more ugly looking weld. Is this practice of welding step by step and let it cool in between right, or is something else wrong?