• Air pressure too high
• Coating material not thinned out sufficiently/ Incorrect viscosity (insufficient solvent)
• Not depositing a wet coat
• Application technique: Gun stroked to rapidly (dusting the paint)
• Insufficient air pressure, air pressure too low
• Wrong air cap or fluid tip
• Stroking too far from surface
• Overspray striking a previously sprayed surface
•  Incorrect gun set-up (poor atomization)
•  Insufficient flow of primer system
• Temperature too high
• Incorrect selection of solvent
  

Prevention

• Adjust air pressure
• Add the correct amount of solvent by measure or determine by viscosity test (if applicable)
• Check solvent use, correct speed and overlap of stroke
• Avoid whipping. Take deliberate, slow strokes
• Increase air pressure or reduce fluid pressure, see technical data sheet
• Maintain 15-25 cm (conventional) or 35 –45 cm (airless) distance to surface
• Spray detail parts first
  

Remedies

• Slight orange peel effect can be removed by polishing. If more serious, the surface must be sanded and re-sprayed.