I have gotten down welding two pieces of steel of the same thickness but my buddy wants to weld an oxygen sensor nut to his exhaust pipes on his car. What would be the best way to do this? The Exhaust pipe is very thin while the nut is very large and very thick. How should I set the machine up? Where should I aim the wire when welding. Favor the nut or favor the pipe? Anyone have any tricks to offer. Thank You.
Sal
Sal