What Causes Paint Cratering
Craters Are Caused by Low Surface Tension Contamination That Is on the Substrate Being Painted, Is in the Paint, or Falls on the Paint. This Produces a Surface...
Craters are caused by low surface tension contamination that is on the substrate being painted, is in the paint, or falls on the paint. This produces a surface tension gradient that causes flow away from the low surface tension area, resulting in a circular low spot (see Figure 1 for an example).
How do you fix cratering paint?
To solve the appearance of cratering in the paint, you must first allow the finish to dry completely, in order to correctly assess the severity of the problem. If the craters are not very large, a good solution would be to sand the surface of the part with P1500 sandpaper, and subsequently polish and glaze the surface.
Why is my paint dimpling?
They are a direct result of the presence of minute levels of contaminants on the surface. The paint will not wet these materials out (e.g. water on wax, grease or oil) and withdraws to form a bowl shaped depression. Cissing/dimpling may also be observed if an unsuitable thinner/retarder has been used.
David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.
