How To Mig Weld Auto Sheet Metal

A better technique is to move around the weld seam doing short quick stitch welds that you eventually connect all together.

How to mig weld auto sheet metal.

For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. While replacing body panels overheating and warping thin sheet metal is common. Essential tips on how to weld auto body sheet metal take it slow when welding auto body sheet metal. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal.

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. 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. When you are new to the whole process of welding auto body sheet. 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.

Tack in a few places apart from each other and wait until the panel is cool to the touch. It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. Place the welding tip wire at the gap and tack weld several small spots spacing them evenly apart. Start with the lowest power setting.

Avoid warping the sheet metal. Then tack between the two previous tacks.