Introduction : an overview : desktop Mill is paint manufacturers laboratories galley proof of one of the grinding equipment. It and other grinding equipment, it will have the following characteristics : 1. the manufacture of paint and painting is no need to paint the mixing process (mixing pulp processes) It is grinding equipment itself is a mixed slurry mixing equipment. Some varieties can be directly input media fluid, solvent, ball mill grinding products can be obtained directly. 2, Mill operation is confined, as produced no solvent without loss, no leakage and thus no toxic gas pollution. Paint solvent slurry of no losses, lower consumption, better economic performance, particularly on the labor protection useful. 3, adaptability extensive production in the manufacture of paint used in PF, alkyd paint, varnish Lek, epoxy paint Paint and other major water-soluble species. 4, for the manufacture of paint tend to back rough, back to the thick of species such as carbon black, the paint system Westland more unique. 5, equipment simple structure solid and durable, easy to operate, cheap, and the production of more safe and reliable maintenance costs, and management costs are low. Due to the above characteristics Mill, the paint industry wider attention and application. Second, the principle of desktop Mill is made of steel cylinder body, the contents grinding media : stone balls (or balls), Motor driven, rotating cylinder of the campaign, Wall Shek ball (or balls) to a certain altitude downward slump, Roller collision caused continuous movement, in this campaign and the ball hit ball rolling, playing all mechanical, make the ball with the ball between the particle aggregates materials and condensate group was split, broken, up to the required fineness coating standards.