2. Use 80. 120. Or 150 sandpaper or grinder to grind the worn parts.

3. Play putty (play putty up and down, left and right several times. For large areas, we should use the methods of up, down, left and right. If the surface of a large area is flat or slightly curved, use a broadsword, and the bumper molding part should use a scraper).

4. After the putty is completely dry, use No.240 sandpaper to polish it (if it is a large area of thick putty, use No.240 to polish it. First use 150 sandpaper to polish, then use long grinding blade or standard grinding blade to polish with 240 sandpaper, and touch the surface of putty by hand. If there is no concave-convex feeling, it is already very smooth. When the requirements of surface curvature and smooth lines are met, use 320 or 360 sandpaper to polish it slightly. )

5. Wipe the polished place with a rag, and then apply red-eye ash after drying (the method is the same as putty).

6. After drying, polish it with 800 sandpaper (to what extent? It is enough to expose the putty when it is almost polished, that is, when there are a lot of sandpaper prints on the putty, red-eye ash cannot be left on it. If there is a whole piece of red-eye ash on it, it is easy to react the paint. )

7. Wipe the polished place with a rag. After drying, cover the unpainted areas with newspaper and spray primer. The method is the same as spraying topcoat.

8. When it is dry, carefully check whether there is trachoma. If there is, make it up with red-eye ash.

9, with 800 sandpaper grinding, (to what extent? Grind until you can't see the graininess on the primer until it feels smooth by hand. If the transition method is used for painting, the places that need to be excessively polished must be polished with No.65438 +0500-2000 sandpaper, and then polished with No.800 or No.65438 +0500-2000 sandpaper. There must be clean water and clean towels in the bucket, and no other coarse sand can be contained in it. )

10, clean and polish the place. (Be sure to clean it. You can wash it with foam first, and then with clean water, including the dust in the place where you just joined. Of course, it is best to use degreasing agent. )

1 1. Drive the car into the spray booth and blow dry the residual water around the place to be painted with a spray gun (be sure to blow dry carefully. If it is dry grinding, it will be less troublesome, and there will be fewer problems caused by water. )

12. Prepare for painting, cover the rest of the car and open the equipment in the painting room.

13. During dust removal in the spray booth, align the topcoat with the thinner, pour it into the spray gun, and adjust the air pressure, paint output and sector of the spray gun.