What are the solutions for a car scratch that exposes the primer?

[AdamDella]

The solutions for a car scratch that exposes the primer are: 1. Apply wax to the car; 2. Use a car scratch repair pen to touch up the paint; 3. Visit a repair shop for professional paint touch-up. The functions of car paint are: 1. Protect the car from corrosion by various atmospheric agents; 2. Decorate the car; 3. Identify the type of car; 4. Improve the comfort and sealing of the car, preventing noise caused by vibrations. The maintenance methods for car paint include: 1. Remove dust from the car body promptly to reduce static electricity's attraction to dust; 2. Rinse off rain stains with clean water as soon as possible after rain to avoid damaging the paint; 3. Avoid washing the car under direct sunlight or high temperatures; 4. Use clean and soft cloths or sponges for wiping the car to prevent metal shavings and sand particles from causing scratches.

[ReedFitz]

Last week when my car door scraped against the wall exposing the primer, I first cleaned the scratch area with a damp cloth. Upon noticing the bare metal showing, I immediately went to the auto parts market and bought a $2 touch-up pen. The application was super simple: just apply a thin coat like nail polish, wait five minutes for it to dry, then apply a second layer. It took about ten minutes to cover the bare metal—works great as temporary rust prevention, though the color mismatch is obvious and the surface feels uneven. For a perfect repair, professional painting is still necessary: technicians will sand off the old paint, apply epoxy primer for rust prevention, then spray three layers of factory-matched color. I found the dealership's $80 quote too expensive, so I ended up going to an independent body shop that did it for $35.

[StCarson]

Buddy, I scraped my bumper while reversing last week, and the primer even exposed the metal. Here's a three-step emergency fix: First, use alcohol to clean off the dirt to prevent rust, then immediately seal the wound with transparent tape. Next, quickly check your insurance—comprehensive coverage can reimburse 70% of the repair cost! The repair shop will remove the bumper, sand down the scratches, fill it with body filler for shaping, and then repaint the entire surface—otherwise, it'll look like a patch job. Remember, don't trust small ads blindly; choose a shop with a paint booth to ensure glossiness. My white car looked flawless after the repaint, with no color difference, and they even fixed some old scratches nearby for just 500 bucks.

[DeMariana]

Last month, while picking up my child, the wheel arch scraped against the wall, revealing black substrate under the silver paint. Temporary treatment is actually quite simple: clean the area and apply touch-up paint containing anti-rust resin. Professional repair involves five main steps: metal panel leveling, epoxy anti-rust primer spraying, intermediate leveling layer, three coats of gradient color paint, and finally a clear coat. Important reminder: it must be addressed before the rainy season! Metal rust spreads when exposed to water. 4S shops use dust-free assembly lines for the best paint results, but the cost is higher. For tight budgets, quick repair chains are an option, costing around 400 yuan with a two-day turnaround.

[McAngelo]

My old Bora's door got scratched down to the bare metal, so here's a money-saving trick—use a three-in-one repair paste. First, sand off any rough edges with sandpaper, then apply a thin layer of rust-proof primer before coloring. However, the repair paste only works for coin-sized damages; anything larger than a fingernail requires professional treatment. The mechanic said exposed primer demands three-layer protection: first, an epoxy primer to block air, second, a color coat with 95% color accuracy, and finally, a clear topcoat to prevent UV fading. Note that prolonged sun exposure accelerates paint aging—I delayed repairs for three months and ended up paying extra for rust removal.

[MacColton]

A novice female driver neighbor scraped a pillar while reversing, exposing the silver metal base on the car's rear. I advised her to immediately apply toothpaste as a temporary measure to isolate moisture (don't laugh, it really works!). Sharing the professional repair process: Use 2000-grit sandpaper to smooth out the burrs, then apply a zinc-containing anti-rust primer as a spot treatment. For large-area scratches, the component needs to be removed for a full respray, with the paint cured in a 65°C baking booth for a harder finish. Color matching is crucial; high-end shops use spectrophotometers to analyze the original factory color code. I recommend a 20-year-old body shop in the old town where the owner personally mixes the paint for just 300 yuan.