Notes on polishing with sandpaper

1. Sandpaper polishing needs to be used with soft wooden sticks or bamboo sticks. When polishing round or spherical surfaces, using cork sticks can better match the curvature of the circular and spherical surfaces. Harder sticks are more suitable for polishing flat surfaces. When polishing, it is also necessary to avoid the sharp angle of the wooden strip (or bamboo strip) contacting the surface of the workpiece, so as to avoid deep scratches.

2. When using polishing sandpaper, sometimes only one type of polishing sandpaper is not used. If you want to replace different types of sandpaper, the polishing direction of the sandpaper should be appropriately changed, and the two directions should be rotated 45°-90° each time, so that The streak shadow left by the previous type of sandpaper can be distinguished.

3. Before changing to the polishing sandpaper model, carefully wipe the polished surface with a cleaning solution such as alcohol dipped in cotton, so as to avoid the sand and gravel remaining on the surface and affecting the subsequent polishing work.

4. When polishing the workpiece with polishing sandpaper, pay attention to avoid scratching and burning the surface of the workpiece, especially when using polishing sandpaper with a relatively high mesh number.