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Paint Finish Problems - Pinholes
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Fine perforations like pin holes appear in the paint surface.
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CAUSES:
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Paint applied too thick or flash time was insufficient. | |
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Paint spraying viscosity was too high. | |
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Painted surface was heated quickly soon after painting. | |
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Existing air bubble holes in the body filler. | |
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PREVENTION:
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Apply paint in several thin coats with sufficient flash time between each. | |
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Accurately dilute the paint with reducer/thinner. | |
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Allow sufficient setting time before force-drying paint. | |
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Correct any air bubble holes in body filler before painting. | |
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Spray basecoat with care to avoid dry spray. | |
CORRECTIVE ACTIONS:
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If the symptom is light, remove the pin holes by sanding, then apply topcoat again. | |
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If the pin holes appear in the entire surface or if the pin holes are deep, strip off the paint and repaint. | | | | 
