Preprocessing of Painting

Preprocessing of Painting




1. Featheredging

NOTE:
- The paint film damaged area should be sanded flat and smooth.
- If this is not done correctly the end results will not be acceptable.

Damage to metal surface:
- Sand the damaged area flat and smooth.




Use the disc sander and #60-80 disc paper.




Use the double action sander and #60-#80 disc paper.




- Sand the area larger than the damaged area.
Use the double action sander and #180- #240 disc paper.

- If a double action sander is not available use a rubber pad and wet or dry sandpaper
Use the flexible and #280,#340,#400,#600 sandpaper.

Damage to undercoat, intermediate coat and top coat
Sand the damage area flat and smooth




Use the double action sander and #180-#240-#320 disc paper.

2. Preparing metal surfaces.
Remove all corrosion from the damage area.




Use a product that removes.

3. Air blowing/degreasing
Use alcohol, wax, and grease remover.