human
What should I know about the different types of sandpaper?
assistant
The type of sandpaper you use depends on what you are trying to accomplish. There are four basic categories of sandpaper, each with its own purpose and characteristics. Each category is designed for a specific task: roughing up, smoothing down, polishing, or finishing. Roughing up involves removing material quickly from a surface in order to create an uneven texture that can be further refined later. Smoothing down is used to remove large amounts of material quickly and evenly so as to produce a smooth finish. Polishing is used to refine the surface and give it a glossy shine. Finishing is used to prepare a surface for painting or coating. It’s important to choose the right type of sandpaper for the job at hand.