human
How do I choose the best sandpaper for my project?
assistant
The best way to choose the right sandpaper is to determine what type of material you are sanding and then find a grit that matches. For example, if you are sanding wood, you may want to start with a coarse grit such as 80 or 100-grit, followed by 120-grit, then 220-grit. If you are sanding metal, you may need to use 400-grit. It's also important to consider the size of the material being sanded; smaller materials require finer grits than larger ones. Finally, make sure to read the instructions on the sandpaper packaging before using it.