Sandpaper grit and roughness comparison table
Sandpaper is a rough abrasive material, usually used for polishing and grinding different kinds of items.
The grit of sandpaper is directly related to the roughness.
The higher the grit, the smaller the roughness of the sandpaper.
The following is a comparison table of sandpaper grit and roughness:
| Grit Level Roughness | ||
| 36#-40# | Very coarse | Rough |
| 60#-100# | Coarse Relatively | coarse |
| 120#-150# | Medium | Medium roughness |
| 180#-220# | Fine | Slightly rough |
| 240#-320# | Very fine | Smooth |
| 400#-600# | Extra fine | Smoother |
| 800#-1000# | Super fine | Smoother |
The above is a comparison table of sandpaper grit and roughness.
The higher the grit, the smaller the roughness of the sandpaper. In actual use, sandpaper of different grits needs to be selected according to the nature of the object to be processed and the smoothness to be achieved.
In the woodworking industry, sandpaper with a mesh count of P120 to P150 is usually used to grind the wood surface to achieve a medium roughness, which can effectively eliminate burrs and dents on the surface and make the surface smooth.
In the automotive industry, sandpaper with a mesh count of P240 to P320 is usually used to polish the body surface to achieve a very fine roughness, making the surface smoother and more durable.
In short, choosing the right sandpaper is the key to achieving a good polishing effect. By understanding the comparison table of sandpaper mesh count and roughness, you can better choose the sandpaper that suits your needs, so as to achieve a better polishing effect.