Dust contamination

Foreign particles embedded in paint film.

Cause:

1. Inadequate cleaning of the surface to be painted.
2. Dirty spraying environment.
3. Inadequate air filtration or unfiltered air entering the booth.
4. Dirty or unsuitable work clothes that contain dust, lint or fibres.
5. Particles from deteriorated air supply lines.
6. Using a poor grade masking paper.
7. Dirty spray gun.
   
8. Removing the vehicle from the spray booth before the finish is 'dust free'.
   

Repair:

1. Sand with 1200 or finer grit sandpaper, then compound and polish to restore gloss.
2. Or, sand smooth and refinish.

Prevention:

1. Thoroughly blow off around windows, doors, jambs, hood, trunk, mouldings, engine compartment, and wheel openings. Wipe the surface to be painted and the masking paper with the tack rag.
2. Maintain a clean working area.
3. Install proper air filters. Repair any leakage found in the spray booth due to poor fitting doors, gaskets, seams or filters.
4. Wear a lint free paint suit during the spray application.
5. Use quality masking materials. 'Wicks' found on newspaper can break away and blow into the wet paint.
6. Repair or replace defective air lines.
7. Properly clean and maintain spray equipment.
8. Vehicle should be kept in a clean environment until finish is 'dust free'.