How to Choose the Grit Size of Abrasive Paper?

Understand abrasive paper

Abrasive paper is a material used for grinding. It is used to smooth the surfaces of metals, wood, etc., to make them smooth and polished. It is usually made by adhering various abrasive particles to the backing paper. There are various types of abrasive papers based on different abrasive materials, such as emery paper, artificial emery paper, glass paper, etc. Dry abrasive paper (wood abrasive paper) is used to polish wooden and bamboo surfaces. Wet abrasive paper is used to polish metal or non-metal surfaces in water or oil. The backing paper is made of unbleached sulfate wood pulp, which is strong, wear-resistant, and flexible, and has good water resistance. Abrasive materials such as glass sand are bonded to the backing paper with glue, and then dried to form the abrasive paper.

Everyone knows how to use abrasive paper, which is to make the surface of objects smoother or rougher, or to remove the old surface of objects, such as paint layers. Perhaps you may not know that inexpensive abrasive paper can be used on most household items, so when you have extra abrasive paper, don't throw them away. They can create more value.

Understanding coarse grit abrasive paper

Coarse grit abrasive paper is used to polish the surfaces of metals, wood, etc., to make them smooth. It is usually made by adhering various abrasive particles to the backing paper. The particles on the surface of coarse grit abrasive paper are relatively large and are used for grinding shovels and carving knives. Coarse grit abrasive paper also serves the same purpose as fine abrasive paper, which is to smooth wounds with adhesive. The use of two types of abrasive paper to smooth wounds depends on the material of the repair object, the type of topcoat, and the smoothness of the wounds.

How to choose the coarseness of abrasive paper?

The choice of abrasive paper coarseness is not fixed. It should be selected according to different needs. Abrasive paper that is too coarse can cause scratches, and abrasive paper that is too fine is difficult to smooth. Therefore, the coarseness of abrasive paper is not the coarser the better or the finer the better. It should be selected based on the actual operational needs. In addition, coarse grit abrasive paper and fine abrasive paper are usually used together. Coarse grit abrasive paper is used for rough processing, and then fine abrasive paper is used to remove the traces left by coarse grit abrasive paper. This saves time and increases efficiency. Coarse grit abrasive paper is mainly used for rough processing. If a product surface needs to remove a thicker polishing layer, coarse grit abrasive paper is used first and then fine abrasive paper to save time and cost. Coarse grit abrasive paper has a higher polishing efficiency, while fine abrasive paper is mainly used for precise polishing, and the products produced can generally achieve a smooth and mirror-like finish.