How To Welding Sheet Metal. Sheet metal like car body panels can be welded with a 115 volt mig welder like a Hobart Handler 140 If you are willing to do these 5 things. A wire feed or tig welder is ideal for sheet metal but we will assume that you dont have one.
The two most commonly used methods for welding sheet metal are MIG and TIG methods. Make sure to use an electrode wire that is thinner as it uses lesser heat and prevents blowing holes on to the sheet metal. Ditch a 18-inch tungsten electrode for something much smaller like 116-inch tungsten.
In general though TIG welding sheet metal can be done like TIG welding any other metal.
The wire melts into the base metal providing the heat and some filler material as the wire melts. A wire feed or tig welder is ideal for sheet metal but we will assume that you dont have one. Ditch a 18-inch tungsten electrode for something much smaller like 116-inch tungsten. Try welding with a scrap sheet metal piece and practice many times until you start working on more important projects.