Does a full car repaint require complete removal of the original paint?
2 Answers
When repainting the entire car, it is not necessary to grind off the original paint, but attention should be paid to color differences in the original painted areas. Relevant explanations are as follows: 1. Precautions: For paint mixing, pay attention to color differences. Take protective measures; areas that are not to be painted must be covered with newspaper or other isolation tools. Also, pay attention to the gun pressure and working environment during painting. Finally, consider the baking time. 2. Painting trajectory: The correct spraying trajectory should remain perpendicular to the surface of the workpiece. When spraying, depending on the angle of the surface being painted, the distance between the spray gun and the surface is generally 15~30cm. To achieve a wetter, darker, and thicker coating, the distance can be closer; to achieve a drier, lighter, and thinner coating, the distance can be farther.
I've been driving for almost twenty years and have had my car fully repainted several times. Honestly, you don't necessarily have to strip off all the original paint. Last time, my old Passat had some paint blemishes, and I asked a familiar technician to assess it. The original paint layer was in decent condition, so we just smoothed it out with sanding and then applied new paint—the result was great, costing just over two thousand yuan. If you insist on completely stripping the original paint, it would take more time and money, and could even damage the metal body, leading to rust. The key is to check the condition of the original paint: if it's severely bubbling or peeling, only then is partial removal necessary. Sanding is usually enough for the new paint to adhere firmly, saving both money and hassle. Based on my experience, I recommend having a professional inspect the car first before making a decision.
