How To Weld Auto Body Sheet Metal

While wire feed welding sheet metal go for short bursts of welding instead of a going on a long bead.

How to weld auto body sheet metal.

To weld sheet metal with solid wires use electrode positive ep or reverse polarity. Mcr s method of butt welding sheet metal is to do three or four quick tack welds followed by and air quench. Short bursts or tacks will help you gain more control and adjust easily. Resistance or spot welding.

Forget the larger 1 8 inch tungsten electrode and use a smaller one. The best two electrodes for welding auto body sheet metal is either ceriated tungsten or thoriated tungsten. Here s a few tips on repairing rust holes in car body panels. While replacing body panels overheating and warping thin sheet metal is common.

Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. For sheet metal i use ine welding wire and it is just as good as their flux cored wire if you want you can grab one here. Avoid warping the sheet metal. Place the welding tip wire at the gap and tack weld several small spots spacing them evenly apart.

Ditch a 1 8 inch tungsten electrode for something much smaller like 1 16 inch tungsten. Try going for a wire of 023 inches when welding sheet metal. It uses no flux or filler and is accomplished by applying a concentrated short circuit and strong physical pressure to a small spot on as many as three thicknesses of body metal to be joined. In this video im showing you the process i use to do small rust repairs where a complete panel.

It works best because it is good for many types of metal and is suitable for quick repairs. They also generally move around the part so that consecutive welds are not next to each. It can handle a wider range of thicknesses than tig or stick. This has been a mainstay of automotive construction since the 1930s.

How to weld auto body sheet metal with a tig welder. Mig is going to be your go to welding type for most auto body repairs.