How To Weld Thin Sheet Metal With A Mig

Here s a shot of 0 3 mm stainless cut from a 5l thinners can that was welded in this way.

How to weld thin sheet metal with a mig.

For thinner gauge sheet metal like 18 or 20 gauge we suggest 023 6mm wire in your mig welder. For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. Tips for welding sheet metal with mig or tig. Learn why mig pulsed mig tig and pulsed tig are the ideal choices when welding sheet metal.

It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. When welding thin metal the main objective is to avoid warping burn through and excessive heat affected zones while still ensuring the weld has enough mechanical strength for the application. Learn how to mig weld automotive sheet metal in about 5 minutes or less. Short circuit transfer mig short arc tig and pulsed tig welding processes provide the most control over the heat to address these challenges.

As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base 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. If your welding wire is too thick it will take more heat to melt the wire than the substrate and can make it even more prone to blowing holes in the panel. I keep it short and to the point in this welding instructional video and show how ve.

Use thin wire one big mistake we see with beginners is using welding wire that is too thick for the metal they re welding. However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire.