Occurrence
Excessive amount of paint that runs down the panel.
Causes
- Inappropriate choice of paint materials for the application conditions (thinners too slow)
- Too low paint viscosity
- Paint or object too cold
- Too thick coat
- Drying time too short
- Gun held too close to the surface or moved too slow
- Gun nozzle diameter too large
Prevention
- Use the correct materials in accordance with the manufacturer's recommended technology
Removal
Small sags can be removed by sanding with P1000-P1200 paper and polishing with polishing paste. If there are large patches, the entire coatings should be removed and reapplied