How To Repair Rust With Sheet Metal

If it gets dirty the weld won t turn out very strong.

How to repair rust with sheet metal.

The first step was to cut out the rust. The welding process actually adds new steel to the thin steel and can result in a repaired spot that is stronger than the original metal. Use aws er70s 6 steel wires for a higher quality. The complexity of welding increases as the thickness of the material decreases.

Sand the area with a coarse grit sand paper using a circular motion. The most permanent repair to a hole in sheet metal is to weld the hole shut. And maybe the epoxy would result in a more rustproof seam. How to repair rust without welding.

While sanding the rust. Paint brush power brush the rusted areas with the wire brush on the power drill to remove the loose rust and flakes from the sheet metal. For an inexpensive all purpose choice get a aws er70s 3 steel wire. Attach a 60 grit flapper wheel to a 4 5 inch angle grinder and put on your safety glasses.

Make sure to get as much rust off the surface at this point as possible. Welding in patch panels with a flux core welder without a gas envelope is an exercise in burn through and swearing so glue it was. Lay the removed section on a piece of fresh steel and trace the outline. Pull the trigger of the angle grinder and run the spinning 60 grit flapper wheel over the rusted area of the metal.

You can then cut. Make sure not to cut through the underlying metal.