How To Weld Thin Sheet Metal With A Mig

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.

How to weld thin sheet metal with a mig. I was hoping to manage a butt weld too but the metal was far too thin for mig and i just blew holes. 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. 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.

Learn why mig pulsed mig tig and pulsed tig are the ideal choices when welding 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. I keep it short and to the point in this welding instructional video and show how ve. However if you are dealing with materials that are 18 gauge or thicker one should be able to use 030 inch welding wire.

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. The stitch welding technique can be very powerful. As a rule when mig welding sheet metal never use a body filler metal that is thicker than the base metal. Learn how to mig weld automotive sheet metal in about 5 minutes or less.

It is recommended that a welder should use 023 or 024 inch wire for light gauge sheet metal work. Keep the stick out short stickout of your mig wire is important when welding any type of metal but especially sheet.