Welding Up Holes In Sheet Metal

Its primary usage is in welding auto body and sheet metal.

Welding up holes in sheet metal.

Here s a few tips on repairing rust holes in car body panels. This may be due to burning through the thin sheet metal welding molding holes fabrication or other reasons needed. Sheet metal on the body of cars and trucks is pretty thin usually 18 22 gauge. For thinner gauge sheet metal like 18 or 20 gauge we suggest 023 6mm wire in your mig welder.

It will inflict less damage on the metal as well. It s also important to select a filler metal that is thinner than the base metal or as close as possible. Regardless of the reason you will have holes that need welded shut. Try going for a wire of 023 inches when welding sheet metal.

The ration of thickness should not exceed 3 1mm. It is softer and finishes well while reducing the heat required to weld it. Get a tig 200. 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.

While er70s 2 filler metal is a common choice for steel another popular option for welding sheet metal is silicon bronze. In this video matt goes over how to fill holes in a fender using a mig welder and a tig welder. 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.

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. Make sure to use an electrode wire that is thinner as it uses lesser heat and prevents blowing holes on to the sheet metal. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick. Never go for a thinner base metal for the auto body sheet welding to get the best result out of it.

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. For this reason i always like to use copper backers and welders helpers to back up and quickly fill the hole.