The razor is not sharp. Do you want to grind the stone to 8000 mesh?

You can't. The mesh number of the millstone is between 240 and 8000. The smaller the mesh number, the rougher the material and the better the sharpening effect. It is usually used to grind tools. The larger the mesh number, the finer the material and the worse the cutting effect, which is usually used to repair the surface of the workpiece. Razor blades are made of stainless steel. When the blade is not sharp, you can use 2000-mesh grindstones, so that the blade will not be damaged because of too few grindstones, and the blade will not be sharp because of too many grindstones. If you choose 8000 mesh grindstone, you can't sharpen the blade, so you can't use 8000 mesh grindstone if the razor is not sharp.