Why does car paint turn white and lose its gloss after polishing?
1 Answers
The outermost layer of car paint is a clear coat, which is transparent and glossy. Improper polishing techniques can damage this clear coat, resulting in a white, dull appearance. Correct car paint polishing method: First, wash the surface of the car paint with car shampoo. Ensure that hard particles like dust are removed, as they can scratch the paint during the polishing process. Then, use wet sandpaper for initial rough sanding of the paint surface. Avoid excessive sanding, as it can damage the paint. Select an appropriate polishing machine and apply polishing wax for the polishing process. After polishing, perform a mirror-finish restoration by wiping the polished area with a mirror-finish treatment agent. Precautions for car paint polishing: Always adhere to the principle of "better slow than fast, better light than heavy" to avoid exposing the primer. Before polishing, it is recommended to use a clay bar to remove surface particles and contaminants from the paint. When polishing the hood, cover the windshield with a large towel or masking film to prevent polishing wax from sticking to the glass seals and wipers, which can be difficult to remove. Control the speed of the polishing machine and do not exceed the selected speed range. Maintain consistent polishing direction and follow a systematic sequence. When changing polishing compounds, also replace the foam pad to avoid cross-contamination.
