Local deep scratches on the watch case or strap should be polished with an oilstone first. This needs to be done under a magnifying glass. The purpose is to smooth out the scratches. When the scratches are basically smooth, choose sandpaper with appropriate granularity and polish it along the original sanding grain. Usually this grain is radial with the dial as the center. Therefore, this is a meticulous work. It takes a little effort to get a good realistic polishing effect. It is recommended that the jewelry industry use sandpaper, preferably imported.

Technically, all frosted lines should be straight, and they all start from the center of the dial and radiate. You can refer to this method if you want to remove all scratches on the case and strap or renovate the appearance of the watch. Straight lines are easier to handle. If the line is concentric circles, it still needs to be made by a motor. However, it is recommended to send it to regular after-sales service.