What Are the Functions of Car Polishing?
4 Answers
Here are the functions of car polishing: 1. Used to reduce the surface roughness of the car, obtaining a bright and smooth surface. 2. Removes issues affecting the paint appearance, such as the oxidized layer on the paint surface, shallow scratches, and loss of gloss caused by oxidation. Here are methods for polishing different car problems: 1. Defect Removal: Spray a small amount of water on the paint surface, use P1500 pyramid sandpaper with a dry grinder to sand the entire surface once in each direction (up, down, left, right) until the paint surface becomes matte. After sanding, use a rubber squeegee to remove the white foam on the surface, observe the paint surface to identify prominent defects, then spray a small amount of water on the sanding disc to remove the defects. 2. Over-Sanded Paint Surface: Use a dry grinder with P3000 pyramid sanding disc and a dry sanding soft pad to sand the over-sanded paint surface. Spray a certain amount of water on the disc and paint surface, then sand the entire surface twice in each direction (up, down, left, right) at a faster speed. After sanding, use a rubber squeegee to remove surface water and white foam. Quality Standard: The paint surface should have no defects such as oxidation layers or scratches. 3. Coarse Wax Polishing: Further remove sandpaper marks after sanding to restore the paint surface's smoothness and initial gloss. Apply wax evenly on a certain area of the paint surface, with the polisher speed controlled between 1200-2000 RPM. Initially, apply medium-high pressure to the polishing pad and polish the paint surface evenly. Observe the paint surface, and once the sandpaper marks are noticeably removed, reduce the pressure to remove wax marks and restore some gloss to the paint surface. After polishing, use a microfiber cloth to clean residual coarse wax and dust from the paint surface.
As an ordinary office worker who has been driving for five years, the step I look forward to the most after a car detailing session is polishing. The main purpose of polishing is to restore the shine to the car's paint. Over time, an oxidation layer forms on the surface, making the car look dull. Using a professional polishing machine with a compound to gently buff the surface can eliminate those fine swirl marks and minor scratches. The effect of waxing after polishing is particularly good, as the wax layer can evenly adhere to the smooth paint surface. I recommend doing it once every spring, especially for white cars, which are prone to yellowing. After polishing, the whole car shines like it just rolled off the production line. Remember to find a reputable detailing shop, as rough handling can actually thin the paint. Also, avoid using coarse cloths when washing your car, as these small habits can help the polishing effects last longer.
Having worked in car detailing for seven or eight years, I've noticed many people mistakenly believe polishing is just for making a car look good. In fact, it's crucial for protecting the paint surface—delaying the removal of oxidation layers can accelerate aging. When performing the procedure, I prioritize three key aspects: removing shallow surface scratches to ensure even light reflection, enhancing the paint's hydrophilicity to prevent water scale buildup, and preparing the surface for subsequent crystal coating application. It's worth noting that dark-colored paints show oxidation particularly clearly; a single polish can make them look two to three years younger. Our shop exclusively uses water-based polishing compounds with three different grit polishing pads, which restore shine without damaging the base coat. We recommend clients undergo polishing every twelve months, as excessive polishing can be counterproductive. After the service, we educate them on using specialized car wash solutions to prolong the effects.
Having driven an old car for over a decade, polishing is the most practical beauty treatment. Over time, the car's paint tends to dull, especially on areas like the hood and front bumper. Polishing can eliminate those fine scratches, making the surface noticeably smoother to the touch. After a full-body polish, the brightness of an old car improves the most visibly, and minor scratches can be repaired, saving the cost of repainting. I usually park outdoors, and polishing can remove the marks left by rainwater on the paint. It's recommended to pair it with waxing, as the wax layer can last for three months. However, it's important to monitor the paint thickness—I only do it once every two years. Nowadays, beauty shops have paint thickness gauges, so it's reassuring to check the thickness before proceeding.
