Polishing treatment of sandpaper

In polishing treatment, fine-grained sandpaper is generally used because it can polish more finely, making the surface smoother. Normally, sandpaper with specifications such as 800 mesh, 1000 mesh, 1200 mesh, 1500 mesh, and 2000 mesh can be selected for polishing treatment, with 2000 mesh sandpaper being the thinnest.

When choosing polishing sandpaper, it should be determined according to the specific situation. For example, if the surface is relatively rough, it can be polished with coarse sandpaper first, and then polished with fine sandpaper; If the surface is relatively smooth, fine sandpaper can be directly used for polishing treatment.