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.

How to mig weld auto sheet metal. Then tack between the two previous tacks. It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. Why are we telling you to start with the lower power setting available when you. Avoid warping the sheet 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. Tack in a few places apart from each other and wait until the panel is cool to the touch. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal.

However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire. Essential tips on how to weld auto body sheet metal take it slow when welding auto body sheet metal. Place the welding tip wire at the gap and tack weld several small spots spacing them evenly apart. 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.

A better technique is to move around the weld seam doing short quick stitch welds that you eventually connect all together. When you are new to the whole process of welding auto body sheet.