How to Deal with Car Body Rust?

2 Answers
DiJeremiah
07/28/25 5:27pm
After the car body rusts, anti-rust treatment should be applied before repainting. Rust often appears on the car body, mainly due to direct contact between the metal sheet and the external environment after scratches. Common causes include collisions, scrapes, and prolonged parking leading to rust. Methods to prevent car rust: 1. Avoid frequently covering the car with a car cover; 2. Apply toothpaste for protection; 3. Perform glaze sealing on soft paint surfaces. If the rust is not severe, you can first use very fine sandpaper dipped in water to gently remove the rust spots, clean it thoroughly, and apply a layer of primer to ensure the rust does not spread or worsen. For new scratches, clean them and apply primer directly. It's advisable to prepare a touch-up pen in advance. After the primer dries, use sandpaper to smooth it out, then use the touch-up pen for color matching.
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VanJasper
08/11/25 11:42pm
I used to have an old car that also had rust issues, and handling it myself was quite simple. First, sand the rusty area clean to expose the metal surface, then apply a rust converter to turn it into a black anti-rust layer, and finally spray some matching car paint and clear coat for coverage. Always make sure to dry the car after washing, especially areas like the wheel arches where water tends to accumulate and cause corrosion. I’ve done this several times in my garage, saving a lot on repair costs and extending the car’s lifespan. The key is to spot small rust spots early before they spread to the internal structure. I recommend buying a rust removal tool kit online—it only costs a few dozen bucks. Remember to wear gloves and a mask when working; safety first.
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