Description of problem:
The paint is slightly granulated resembling the outside of an orange.
Causes:
- Bad spraying technique. The gun is either too far away or too close.
- Application thickness is either too little or too much.
- Thinner is too fast drying.
- Viscosity is too high.
- Incorrect air pressure.
- Temperature is too high.
- Insufficient sanding of substrate.
- Incorrect spray gun set up.
Preventive measures:
- Use correct spraying technique.
- Adjust the air pressure so as to minimize the “poussierage”.
- Use slower thinner or retarder.
- Use recommended thinning ratios.
- Use recommended gun set up.
- Prepare and sand substrate correctly.
Remedy:
- In minor cases, wait until the paint is fully dry and polish with a coarse compound and then a fine compound.
- In more serious cases, you may have to sand with P1200 and polish.
- In extreme cases you should sand with P500/P1000 and respray.
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