Quote Originally Posted by D.C. View Post
If you are trying to weld thin steel and thick steel together you need to run the weld pool down the thick piece of metal and then quickly move across to the thin metal, back to the thick metal, down a bit across just enough, back again to the thick piece, down again etc etc
Exactly how i do it, always bias towards the thicker part and set power for the upper end of the thinner part.

I had to cut a 10mm plate off the end of a 50x50x2mm tube yesterday as i welded it on 90deg out and i was impressed with the penetration i was getting, took some cutting to split the joint.