How To Mig Weld Auto Sheet Metal

Short quick welds when welding sheet metal with a mig welder you do not want to try and run one long bead like when you re welding heavier metal.

How to mig weld auto sheet metal.

The main reason to use a smaller diameter wire is that it takes less heat for melting and hence the metal around the weld is not heated to a very great extent. Place the welding tip wire at the gap and tack weld several small spots spacing them evenly apart. Essential tips on how to weld auto body sheet metal take it slow when welding auto body sheet metal. Then tack between the two previous tacks.

Sheet metal warps easily and also can burn through easily. For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. When welding a long bead on sheet metal you ll put excessive heat into the panel and run the risk of the puddle falling through the panel. Tack in a few places apart from each other and wait until the panel is cool to the touch.

While replacing body panels overheating and warping thin sheet metal is common. A better technique is to move around the weld seam doing short quick stitch welds that you eventually connect all together. Avoid warping the sheet metal. When you are new to the whole process of welding auto body sheet.

It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal.