Rust will eat away at a car's body and will continue to spread throughout the body of the car until it is dealt with. You need to act quickly to prevent rust from destroy the structural integrity of the auto body. Once rust has started to show you will need to remove it and paint the area. You can save a few dollars by doing the work yourself and by following this simple list of instructions that will teach you how to fix a rust spot on an auto body.
1 - The first step is to scrape off the rusted area using sandpaper and the electric grinder. Begin by taking the sandpaper and removing all the rough edges and chips of rust before you take the electric sander to the area. The electric sander should grind the area down to the metal of the car.
2 - Once the area has been sanded down to the metal, take the bucket of warm soapy water and a sponge and clear the dirt and debris on the area. This will clear the area of any contaminants that are stuck to the area before you apply the paint to it. This will allow the paint to adhere better to the area after it is applied.
3 - Take painters tape and tape off the area surrounding the rusted area to ensure that you are not painting over areas that do not need to be painted. This will also prevent drops of paint from spreading throughout the rest of the body of the car.
4 - With the area taped off, you can begin to apply a coat of primer paint to the area using a small rolling paint brush. Make sure when you apply the primer that the paint is applied consistent in all areas and that there are not one area with a higher concentration of paint than another.
5 - With the primer paint dried, you are not safe to apply the final coat of paint to the area. Take a coat of paint that matches the rest of the auto body and apply it to the area using a new roller brush. Make sure the paint is completely covers the area, then let it dry and apply another coat of paint on top of that.
6 - Let the area dry for a full day and then remove the painters tape from the area to complete the job.
If you do not have the time to fix a rust spot then you can take it into an auto body shop like Clint's Body Shop & Rental Cars that specializes in rust removal and repair.