This machine is consisted with fixed polishing drum and rotating polishing disc. The disc rotation motion creates centrifugal force, which makes the polishing stone and the work pieces hit the wall of the fixed drum. This makes vortex and the polishing stone and the work pieces travel to rotating discs back and force. It is also called a vortex type polishing machine because it collides with the polishing stone and work pieces to create vortex resulting in strong cutting force or make the surface more gloss.