Color variation in metallic paint, with patches of lighter or darker tint, often in streaks following the direction of spraying.
Causes
Irregular application density of the basecoat. This is a result of:
- Poor spraying technique
- Poor pattern from the spray nozzle
- Paint too wet, insufficiently mixed paint, poor quality or wrong type of thinner
- Surface too hot or too cold
Prevention
- Use the correct spraying technique
- Adjust the nozzle to the correct pattern before spraying
- Ensure that the paint is thoroughly mixed to the correct consistency
- Use only recommended thinner. Ensure that the surface is within the recommended temperature range
Correcting
If the clearcoat has not been applied, reapply the basecoat; otherwise sand down the surface and repaint.
