Rust bubbles
are a sign of corrosion.
Rust is a corrosive condition that occurs when moisture comes into contact with metal. If the metal is painted, or has a clear coat on it, the rust spots often appear as bubbles on the surface of the metal. If left untreated, rust bubbles will get worse until they eventually eat a hole through the metal. To fix rust bubbles, you must remove the rust and seal the metal to block out moisture. Does this Spark an idea?
Instructions
1. Pour 1 to 2 tbsp. of alcohol onto a cloth and wipe the entire area of rust with the cloth, extending outward 1 inch beyond the rust.
2. Scape off as much of the rust bubbles and loose paint as possible using a knife or other flat object.
3. Mount a 36-grit sanding disc onto a disc grinder. Wear safety glasses and a dust mask. Turn the disc grinder on and place the flat edge against the area of rust. Sand off the rust until only shiny metal is visible.
4. Wipe the area with a clean cloth to remove all dust and sanding debris.
5. Mix cellulose body filler with water as directed on the packaging until it forms a thick paste. Apply the body filler to the sanded area with a putty knife until it mounds up slightly. Allow the body filler to dry until it is hard to the touch.
6. Mount an 80-grit paper onto the grinder and put on safety glasses and a dust mask. Turn the grinder on and sand down the hardened filler until it blends smoothly into the rest of the metal.
7. Wipe down the metal to remove the sanding dust and spray paint the metal with two coats of paint to seal it. If you are repairing a vehicle, look inside the door jam for the paint color or trim code and take it to an auto supply store to match the paint.
Tags: body filler, rust bubbles, area rust, area with, disc grinder
