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Origin and Potential Causes:
· Incorrect spray viscosity, flash off time, technique, or film thickness.
· Defective spray gun or incorrect gun setup.
· Wrong thinner or reducer.
· Too much thinner or reducer.
· Lighting in the spray booth is not accurate and the painter is unable to apply coating correctly.
· Surface is contaminated by oil, grease, etc. (causing lack of atomization), holding gun too close, or making too slow a gun pass.
· Incorrect technique of application. · Paint drops from the gun.
Prevention Techniques:
· Allow vehicle surface to warm up to at least room temperature before attempting to refinish.
· Try to maintain an appropriate shop temperature for paint areas.
· Use proper gun adjustment, techniques, and air pressure. · Don't pile on finishes. Allow sufficient flash off and drying time in between coats.
· Select proper thinner/reducer.
· Read and carefully follow label or product data sheet instructions. existing shop conditions.
· Install accurate lighting systems in the spray booth.
· Ensure that the spray gun is in good working order.
Remedy:
Wash off the affected area and let dry until you can sand the affected area to a smooth surface and refinish. For solid colors and clear coats, sanding and polishing is recommended. In the case of a base coat, refinishing after sanding is necessary.
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