Now remove the paint from the damaged area using sandpaper. You can also use a wire brush. In places where the repair area borders with undamaged paint, clean the paint using fine-grained abrasive paper.
If the damaged area is covered with rust, it must be removed using a rust remover and corrosion inhibitor.
Prepare the filler according to the manufacturer's instructions. If there are holes eaten away by rust, they can be covered with zinc or aluminum tape. Make sure the work area is completely clean before proceeding.
Apply the filler. It is best to apply it with a flexible spatula. Apply layers of filler at 20-minute intervals until the area where the filler is applied protrudes slightly in relation to the rest of the surface.
Profiling can be done with special tools. Then, using sandpaper with increasingly smaller grain sizes and more water, process the repaired area so that it becomes smooth. Clean the edges of the border with paint.
Now spray the entire repair area with primer from a can or apply it with a brush. If you use a can, protect other places from the product, the primer should cover the surface at a distance of at least 2.5 cm from the edge of the repair area. The primer has a liquid consistency, so no beads will form.
Using sandpaper (400 grit) and plenty of water, sand the primed area until it is smooth and blends with the adjacent paint. Minor imperfections can be removed with a fine abrasive paste.
Once the paste has dried, sand the repair area again before applying the final coat of primer. Make sure the primed surface is smooth and free of imperfections.
Now apply the top coat. For outdoor work, choose a dry, warm and windless day. Protect other parts of the car from paint. Apply paint from a can, starting from the middle of the repaired area, in a thin layer, in circular motions. Apply paint in several thin layers.
After about two weeks, when the paint is completely dry, treat the repaired surface with a special polishing compound. When performing bodywork, remember that the final quality depends on the effort and time spent.