The polishing method of 0.68 pepper ball is different from the polishing technology of other spherical products, mainly because the hardness of 0.68 pepper ball is not high and the density is not as high as that of metal ball, ceramic ball, glass ball and other spherical products, so the polishing difficulty increases accordingly. Different materials are used for polishing consumables. The metal ball is polished with a high hardness ceramic polishing ball, while the 0.68 pepper ball is polished with a high aluminum ceramic polishing ball. Special polishing liquid must be added, otherwise the 0.68 pepper ball will become sticky and the polishing ball will be ground. The scraps of the pepper ball will adhere to the abrasive, causing the pepper ball can not be polished at all, and the final product is not good. Therefore, the polishing technology of 0.68 inch pepper ball mainly depends on the selection of consumables.