I finally got to experiment with my mig welder. I decided to practice spot welds to start. I used 1/16" steel, 023 solid core wire and the wire speed halfway. I experimented with the heat control. I used the 2 second rule. I used the highest heat on the last weld on the right, and it burned through, as did the weld third from the left. Now, tell me, are those little indentations on top of the welds normal? What do you all think? Did I do ok?