Paint Finish Problems - Paint Contamination (Debris)

1.	Paint Contamination (Debris)

Foreign particles are trapped in the finish surface, causing the swelled paint surface. This is caused by the foreign particles entering the paint during storage or application.

CAUSES:

Dust and dirt in the air adheres to the wet paint film.

Dust and dirt coming out around the fenders, doors and plastic strips during painting.

Paint applied without being thoroughly stirred.

Spray gun not cleaned thoroughly after prior use.

Use of the paint that has skinned inside the container.

Improper paint straining and/or air filtration.

PREVENTION:

Keep the paint workshop clean. Use dust prevention methods.

Remove the dust and dirt thoroughly from the surface being painted.

Pay special attention to ventilation to draw the fresh air into the workshop.

Clean the spray gun used thoroughly after each use.

Stir the mixed paint thoroughly before use.

Use the recommended paint reducer/thinner and strain mixed paint before use.

CORRECTIVE ACTIONS:

Remove foreign particles from the paint surface using a sharp stick or equivalent tool, if paint is still wet.

Small foreign particles on the surface of the paint film can be removed with compound or by polishing.

If the foreign particles are large and deep in the paint film, wet sand the area using P400 or finer sandpaper, then repaint.