The paint was scratched a little. Do you need to brush the whole surface to repair it?

Do you want to draw the whole face? It depends. There is a difference between painting the whole surface and painting a part. Let me talk about what is a global surface and what is a local surface.

First of all, local painting, generally speaking, can only be carried out when the paint surface is scratched in a small range and the sheet metal parts are not deformed. Partial painting is to polish your injured paint surface with sandpaper, then scrape off the ash to fill the damaged part, polish it again, and finally paint it. He is different from painting the whole face. He is so eager to repair it where it is needed, just as we used to repair it. The advantage of this is that it is a block and does not need large-scale construction. But it also has disadvantages, because the formula of each color coating will be different, so the effect of spraying is that there will be slight color difference. After a period of exposure to the sun, the color difference will become larger, and it will look like a patch in the later stage.

Let's talk about full-face painting first. Full-face painting is a full-face painting, no matter how big your damaged surface is or whether you need to make sheet metal. The car has 13 faces, and a door counts as a face. Before painting, the whole paint surface should be polished clean and flat, and sprayed on the whole surface. The color difference effect is much better, and there will be no color difference similar to the patch. When making paint, the master will do more on both sides, so-called paint interface transition, so that the painted and unpainted surfaces can't be seen.

Therefore, in order to reduce color difference, full-face painting is widely used in repair shops or 4S shops at present. Quick spray is generally a friend who often uses the car and has no time to get off and paint slowly, or someone drives a colorful car on the road because of a little time problem.

To explain, the polishing of the paint surface here is not to polish off all the paint surfaces, but to polish off the white varnish on the paint surfaces. When spraying, the old and new colors can stick together without layering.