What type of sandpaper do I need for preparing wood before I paint it?
Aluminum oxide is a good multipurpose sandpaper. It cuts fast and lasts long time. It’s usually best to use three different grits of sandpaper. Start with the #320, which is a course grade. Follow this with #400 and then #600. Sand with the grain of the wood at all times. For sanding fine woodworking projects you may want to use garnet sandpaper.
