Welding Up Holes In Sheet Metal

If you are going to weld on thin sheet metal such as car body parts then you re going to have holes to weld from time to time.

Welding up holes in sheet metal.

For thinner gauge sheet metal like 18 or 20 gauge we suggest 023 6mm wire in your mig welder. Its primary usage is in welding auto body and sheet metal. For this reason i always like to use copper backers and welders helpers to back up and quickly fill the hole. Regardless of the reason you will have holes that need welded shut.

It s also important to select a filler metal that is thinner than the base metal or as close as possible. So you won t have much forgiveness if you try to pile weld in the hole and you can end up with a bigger hole than you started with. This may be due to burning through the thin sheet metal welding molding holes fabrication or other reasons needed. Try going for a wire of 023 inches when welding sheet metal.

Try welding with a scrap sheet metal piece and practice many times until you start working on more important projects. Here s a few tips on repairing rust holes in car body panels. While er70s 2 filler metal is a common choice for steel another popular option for welding sheet metal is silicon bronze. In this video im showing you the process i use to do small rust repairs where a complete panel.

The spot welding process is one of the oldest welding methods used. Small wire diameter will let you have flexibility if you mess up anything. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick. Get a tig 200.

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. Sheet metal on the body of cars and trucks is pretty thin usually 18 22 gauge. It is softer and finishes well while reducing the heat required to weld it. Make sure you always work with a small wire diameter to avoid making holes in your sheet metal.

Never go for a thinner base metal for the auto body sheet welding to get the best result out of it. In this video matt goes over how to fill holes in a fender using a mig welder and a tig welder.