Do you know sandpaper
Sandpaper is a paper with abrasive particles adhered to it, which is used to level the surface of an object, or to remove appendages (such as old paint) on the surface of an object, and sometimes to improve sliding friction.
Sandpaper is a material for grinding, used to grind metal, wood and other surfaces to make it bright and smooth. According to different abrasive materials, there are many kinds of emery paper, artificial emery paper, glass sandpaper and so on. Dry sandpaper is used to polish wood and bamboo surfaces. Water-resistant sandpaper is used to polish the surface of metal or non-metal workpieces in water or oil. The base paper is all made of unbleached sulfate wood pulp, which is strong and tough, wear-resistant and folding-resistant, and has excellent water resistance.
We often encounter defects in some objects or the surface is not smooth in our life, and then we use sandpaper for grinding. Of course, there are many kinds of sandpaper, different industries have different operating requirements for sandpaper. Some adapt to the characteristics of the abrasive tool, and some select the sandpaper according to the different characteristics of its shape and material.we need to choose and use according to our actual situation.
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