Sandpaper a material used for grinding. Sandpaper rolls are another form of sandpaper.
Sandpaper rolls are divided according to use: Sponge sandpaper: suitable for sanding smooth parts, all kinds of materials can be used. Dry sandpaper: suitable for rough machining or sanding some rougher things, such as iron pipe metal, etc. Water scrub paper: The texture is relatively fine, water scrub paper is suitable for polishing some things with finer texture, and suitable for post-processing; water scrub paper has a small gap between the sand grains, and the grinding powder is also small, and it will be broken when used together with water. The sand will flow out with the water, so it should be used together with water. If the water sandpaper is used for dry grinding, the powder will remain in the gaps of the sand grains, which will make the surface of the sandpaper bright and thus cannot achieve its original effect. It’s not that troublesome, the gap between the sand grains is larger, and the grinding powder is also larger. During the grinding process, the powder will fall off due to the large gap, so it does not need to be used with water. According to the product name: wood sandpaper, that is, dry sandpaper; water sandpaper, that is, water-resistant sandpaper; iron sandpaper, a kind of dry sandpaper, which is thicker and can polish the metal surface as soon as possible.