Under What Circumstances Should Paint Be Applied?

[Jimenez]

Paint application is necessary under the following circumstances: 1. When the paint surface is severely aged and cannot be restored through polishing techniques; 2. When the paint surface is heavily eroded by lens effect and loses significant gloss; 3. When the paint surface has a thick oxidation layer with localized corrosion that cannot be polished away; 4. When the paint surface has deep scratches that cannot be removed by polishing; 5. When the paint surface has localized or extensive damage. Loss of adhesion may occur between the topcoat and primer, between the topcoat and old paint layers, or between the primer and metal surface. During the painting process, the feathering repair method should be employed. This involves applying the second coat of primer over a slightly larger area than the first, followed by adding approximately five times the amount of thinner for edge feathering during application.