How To Mig Weld Auto Sheet Metal

Tack in a few places apart from each other and wait until the panel is cool to the touch.

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. Why are we telling you to start with the lower power setting available when you. Avoid warping the sheet metal. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal.

Then tack between the two previous tacks. Place the welding tip wire at the gap and tack weld several small spots spacing them evenly apart. 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. However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire.

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. For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. Start with the lowest power setting.

Sheet metal warps easily and also can burn through easily. While replacing body panels overheating and warping thin sheet metal is common.