How To Weld Thin Sheet Metal With A Mig

Learn why mig pulsed mig tig and pulsed tig are the ideal choices when welding sheet metal.

How to weld thin sheet metal with a mig.

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. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. For thinner gauge sheet metal like 18 or 20 gauge we suggest 023 6mm wire in your mig welder. I was hoping to manage a butt weld too but the metal was far too thin for mig and i just blew holes.

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. I keep it short and to the point in this welding instructional video and show how ve. Here s a shot of 0 3 mm stainless cut from a 5l thinners can that was welded in this way. Keep the stick out short stickout of your mig wire is important when welding any type of metal but especially 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. Short circuit transfer mig short arc tig and pulsed tig welding processes provide the most control over the heat to address these challenges. Learn how to mig weld automotive sheet metal in about 5 minutes or less. Use thin wire one big mistake we see with beginners is using welding wire that is too thick for the metal they re welding.

Tips for welding sheet metal with mig or tig. The stitch welding technique can be very powerful.