Generally, the surface of the finished plastic pepper ball can reach the mirror effect. If the surface of the plastic pepper ball looks smooth, but it is found that the surface is rough under the magnifying glass and the feel is not very smooth, then there is something wrong with the polishing process, and such problems often occur when the general plastic pepper ball manufacturers are inexperienced.There are two reasons for the poor polishing of the surface of plastic pepper ball. The first reason is that the number of grinding wheels used in the plastic pepper ball milling machine is too coarse. Although the rough grinding wheel will have high efficiency in processing plastic pepper balls, the surface is too rough, which will interfere with the next polishing process. Normal plastic pepper ball grinding requires two processes, the first is rough grinding, and the second is fine grinding. Only by adding the fine grinding process, plastic pepper balls will be easily polished and the surface polishing effect will be good.