Hi you guys. I read some of the posts concerning weld prep and appearance and tried a couple of the suggestions first before asking some questions of my own. Just for background, I have many years of gas welding and stick welding experience but hardly any with a Mig welder. I recently bought a Hobart Handler 135 and although I like it, I can't figure out why my welds on angle iron look so ugly. I can weld on mild steel (1/8th inch) and my welds have evenly spaced ripples and look much like my stick welds. I read the post about removing mill scale by grinding to shiny metal on angle iron and thought if I did that, then my welds would look as good as the ones I have made stick welding. Funny thing is that on mild steel scraps from work that I brought home to practice on, the welds look half way decent but on clean, non rusty and ground off angle iron they don't have a nice bead. Like I said, I tried making sure the metal was clean and ground off the mill scale to shiny metal and it's also 1/8th inch angle iron so I am running a 3 on the voltage (4 being the highest) and a wire speed of 30, same as I ran on the mild steel scraps. Any idea why the difference in the outcome? Any suggestions would be much appreciated. Also, I am using .030 flux core wire. I will get a bottle of Argon/Co2 mix in the near future and run solid core wire so would that make a big difference? I figured I'd learn how to use the welder with the flux core wire and then go to Mig. Thanks again, Tim.
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