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 block 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. Preparation of metal surface
Remove all corrosion from the damaged area.

Use a product that removes corrosion.

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