Yellowing of Clear Coat
The clear coat has developed a yellowish tint.
New paint:
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Dirty spray gun.
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Incorrect clear coat and/or hardener.
Old paint:
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The clear coat is too thin.
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Contaminated hardener.
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Incorrect clear coat.
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Effects of corrosive environmental conditions.
Prevention:
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Ensure that hardener containers are tightly sealed after use.
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Follow the recommendations in the technical data sheets (TDS).
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Use the recommended hardener.
Correction:
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Allow the paint surface to dry properly. Sand and repaint.