Welding Up Holes In Sheet Metal

Here s a few tips on repairing rust holes in car body panels.

Welding up holes in sheet metal.

Try welding with a scrap sheet metal piece and practice many times until you start working on more important projects. Never go for a thinner base metal for the auto body sheet welding to get the best result out of it. Its primary usage is in welding auto body and sheet metal. The spot welding process is one of the oldest welding methods used.

Sheet metal on the body of cars and trucks is pretty thin usually 18 22 gauge. Small wire diameter will let you have flexibility if you mess up anything. The ration of thickness should not exceed 3 1mm. It will inflict less damage on the metal as well.

This may be due to burning through the thin sheet metal welding molding holes fabrication or other reasons needed. In this video matt goes over how to fill holes in a fender using a mig welder and a tig welder. It is softer and finishes well while reducing the heat required to weld it. For this reason i always like to use copper backers and welders helpers to back up and quickly fill the hole.

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. It s also important to select a filler metal that is thinner than the base metal or as close as possible. Get a tig 200. Make sure to use an electrode wire that is thinner as it uses lesser heat and prevents blowing holes on to the sheet metal.

While er70s 2 filler metal is a common choice for steel another popular option for welding sheet metal is silicon bronze. Spot welding is usually used to join a panel of overlapping sheet metal parts that are usually 3mm thick. In this video im showing you the process i use to do small rust repairs where a complete panel. 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.

Regardless of the reason you will have holes that need welded shut. Try going for a wire of 023 inches when welding sheet metal.