Mechanical polishing is by cutting, material surface plastic deformation to remove the polished convex and get a smooth surface of the polishing method, generally using oil stone strips, wool wheels, sandpaper, etc. , to manual operation mainly, special parts such as swing surface, can use the turntable and other auxiliary tools, surface quality requirements can be used by ultra-fine research and throwing method.
Chemical polishing is the desire to allow the surface of the material to microsify the concave part of the chemical medium to dissolve first, thus obtaining a smooth surface. The main advantage of this method is that it does not require complex equipment and can polish the complex shape of the workpiece.