Cause

1. Under reduction and/or air pressure too low.
2. Thinner/reducer evaporates too fast for spray conditions.
3. Excessive film thickness or piling on of heavy wet coats.
4. Improper spray gun set-up.
5. Improper painting technique.

 

Repair

• Compound or polish to reduce surface texture.
• Or, sand smooth with 1200 or finer grit sandpaper, compound and polish to restore gloss.
• Or, sand smooth and refinish

 

Prevention

1. Use proper reduction ratio and spray at recommended air pressure.
2. Select recommended thinner/reducer based on temperature, humidity, air movement, and size of repair.
3. Avoid heavy coats and excessive film thickness.
4. Use recommended spray gun, fluid tip and air cap for the material being sprayed. Always adjust the gun for best atomization and balanced spray pattern before paint application.
5. During paint application, hold the gun perpendicular and parallel to the surface. Adjust speed of pass, pattern overlap, and distance from the panel to achieve the desired appearance.