1. In order to avoid abrasions and burn workpiece surfaces, special care must be taken when polishing with #1200 and #1500 sandpaper.It is necessary to load a light load and to polish the surface with two-step polishing method.With every kind of model in polishing abrasive paper should be two polishing along two different directions, two directions between each rotation 45 ° ~ 90 °.

2. When the switch to a different type of sand paper, polishing direction should transform to 45 ° ~ 90 °, so before a sandpaper model after polishing the stripe of shadow can be distinguished.Before in different type sandpaper, such as touch with 100% pure cotton must take alcohol cleaning fluid to carefully wipe the polishing surface, because of a tiny grains of sand on the surface will destroy the whole polishing work.This cleaning process is also important when polishing from sandpaper to diamond grinding cream.All particles and kerosene must be thoroughly cleaned before the polishing continues.
3. Use a soft wooden stick or bamboo stick to polish the paper.When polishing round surface or sphere, use the cork rod to better match the curvature of the round surface and the sphere.The harder wood, like the cherry wood, is more suitable for smoothing the surface.Trim the end of the strip so that it fits in with the shape of the steel piece, so that the sharp edges of the strips (or strips) can be avoided, causing deep scratches on the surface of the steel.