How to Deal with Rusty Car Doors?
2 Answers
Methods to handle rusty car doors: 1. If the rust appears on the surface and covers a small area, you can use water sandpaper to grind off the rust and then spray a layer of anti-rust paint; 2. If the rust has damaged the primer, the rust must be ground off, followed by primer spraying, and then topcoat spraying; 3. If the door is severely rusted with large areas of paint peeling, the rusted paint must be completely removed, followed by filling and leveling with putty. After the putty hardens, proceed with repainting; 4. If the door is rusted through, repair is generally not recommended as the effect is limited, and rust may reappear after some time. It is more advisable to replace the door. It is recommended to replace the door at a 4S shop, as they use original factory parts. Many 4S shops do not allow the use of aftermarket parts for vehicle repairs, whereas external repair shops typically use aftermarket parts.
I've dealt with door rust before, mainly caused by daily scratches not being repaired in time. Last summer I noticed rust spots along the bottom edge of the door, so I got myself a set of tools to fix it: First washed off dirt with car shampoo and water, then carefully sanded the rusted areas with sandpaper to expose clean metal; Next applied rust-proof primer to cover well and waited for it to dry, finally sprayed on color-matched paint to restore the original color. The whole process took most of a weekend, with pretty good results, saving the cost of going to a repair shop. Remember to wear gloves to protect your hands during operation, and work in a ventilated area to avoid inhaling dust. For prevention, I've developed the habit of thoroughly drying doors after washing the car, especially those seams, to reduce water accumulation and prevent new rust. The key is to regularly check the body for damage - early treatment means less expense.
