human
What should I know about the different types of sandpaper?
assistant
The different types of sandpaper vary in coarseness, grit size, and material. Coarse sandpaper is typically used for roughing up surfaces, while finer-grit sandpaper is better suited to smoothing down materials. Sandpaper can also be made of either aluminum oxide or silicon carbide, which each offer their own advantages. Aluminum oxide is generally more abrasive than silicon carbide, but it's also harder wearing. Silicon carbide is less abrasive but more durable. Additionally, some sandpaper may have an oil coating that helps prevent clogging and allows the paper to glide across a surface more easily.