Hi. I have about an 2 hours of diy training with my Thunderbolt ac/dc. I now try to make nice welds on a flat surface. I marked the steel with a welder chalk. but when I weld I don't see my mark at all. and I end up going everywhere... what is the cause or what to do plz . yes my mask lens is pitted. I just ordered a new shade #9 one
how do you keep an straigh weld please?