Description of problem:
The old paint or the ground coat is visible underneath the topcoat.
Causes:
- Paint was not stirred well.
- Paint is over thinned.
- Thinner is too slow which makes the paint run before the required thickness is achieved.
- Thinner used is incorrect.
- Not enough spray passes (too low film build).
Preventive measures:
- Stir the paint well.
- Use appropriate thinning ratio.
- Use appropriate thinner.
- Spray sufficient topcoat to obtain opacity.
Remedy:
Allow drying fully. Sand and repaint.
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