
First, perform a simple polishing on the car body surface. Paint oxidation renewal polishing and paint scratch repair operations are mostly carried out locally. Squeeze an appropriate amount of wax liquid onto the car body. Then use a polishing machine with the wax liquid for polishing. The film formed by waxing can reflect part of the light, effectively preventing the car paint from aging. Next, wipe the car body with a towel to make the polished part smoother and cleaner. Finally, you can see that the car's paint surface is restored to its original condition.

Last time I spent quite a while helping my uncle deal with those tiny paint speckles. Those little dots were most likely dust or impurities that settled during painting, or maybe some dirt got mixed into the paint. Gently scratch them with your fingernail—if they're raised, it's probably settled dust; if they're indented, it's likely air bubbles that weren't properly cleaned from the primer before painting. For small areas, you can try fixing it yourself: use 3000-grit sandpaper with water to lightly sand down the raised spots, then apply polishing wax in circular motions, and finish with a mirror glaze compound. But if the whole car is covered in dense speckles, or if it's a fresh paint job that got contaminated right away, it's best to take it back to the shop for rework—after all, professional paint booths have dust removal systems, and botching a DIY fix would cost more. Remember, don't wash the car for the first three days after painting!

I've been playing with car model painting for ten years, and this issue is all too common. Paint surface imperfections come in three types: sugar-like granules indicate excessive environmental dust during spraying; small crater-like marks mean oil residue wasn't properly cleaned; orange peel texture results from incorrect thinner ratios. For the first two types, first warm the car in sunlight until the hood is warm but not hot to touch. Mask off the affected area with painter's tape. Apply a fingernail-sized amount of 3M cutting compound on a foam pad, then lightly buff in one direction like applying foundation. Never use circular motions! Check smoothness by rubbing with your knuckle every thirty seconds. If you grind through to primer, use a touch-up pen for spot application, wait two days before polishing for better invisibility.

Having repaired hundreds of paint jobs in the workshop, small particles are caused by two common slip-ups in nine out of ten cases: either the body wasn't wiped down with a tack cloth before painting, or the air compressor filter hasn't been changed in three months. If a paint shop blames the weather, don't take their word for it—professional paint booths maintain constant temperature and humidity. For a DIY fix, just prepare wet sandpaper and liquid polish. Fold the sandpaper to the size of a tofu block and soak it for five minutes. Gently scrape the particles along the airflow direction with the edge of the sandpaper using your fingertips, stopping immediately once smoothed. Then, pour a coin-sized amount of polish onto a microfiber cloth and rub in a figure-eight motion for twenty seconds. Finally, rinse with water to check—any remaining white haze will naturally disappear within a week.


