what is the relationship between the number of sandpaper mesh and grinding roughness?
The mesh number of sandpaper reflects the density of several bundles of sandpaper fibers. The higher the mesh number, the higher the fiber bundle density, the smoother the sandpaper surface, and the weaker the grinding ability. The lower the mesh number, the smaller the fiber bundle density, the stronger the grinding ability and the greater the surface roughness.
what is the application of different mesh sandpaper?
1. 60 to 80 mesh sandpaper: Used for the preliminary grinding of materials, such as removing paint layers and cleaning woodworking surfaces. Because it is thicker, it can quickly cut the surface of the material, making the surface rough and suitable for roughing.
2. 120 to 150 mesh sandpaper: used to remove the residual defects and abrasion marks after preliminary grinding, and to form a certain tooth mark on the surface. This kind of sandpaper is more suitable for medium processing, such as grinding wood, metal, plastic and so on.
3. 180 to 220 mesh sandpaper: used to smooth the surface and remove finer abrasion marks. This sandpaper is suitable for smooth surfaces, such as precision metal parts and wooden furniture.
4. 320 to 400 mesh sandpaper: Used for final polishing, especially for fine wood products and other fragile materials. This sandpaper is very fine and can be cut and ground to a smoother surface.
how to the use of sandpaper ?
1. Select the appropriate number of sandpaper mesh for sanding.
2. Do not use too much force, so as not to wear or scratch the surface of the sandpaper due to excessive force.
3. There is no need to spend too long on each mesh sandpaper, usually only a standard sanding is required.
4. Be sure to clean the surface and the material on the sandpaper between using different sandpaper to avoid residual dust and particles scratching the surface.
In short, the correct selection of the mesh number of sandpaper, with the correct grinding skills, can improve the efficiency of the operation and the quality of the finished product. I hope this article will be helpful to you when purchasing and using sandpaper.
