Common Sandpaper Grades Extra-Coarse (24- to 36-grit) Sandpaper that's 24- or 36-grit is used mainly for sanding down hardwood floors in tandem with a drum sander.

Fine (100- and 120-grit): The best utility sandpaper. Fine grades smooth scratches left by coarser grades and rough up painted surfaces before accepting new paint.

Common Sandpaper Grades Extra-Coarse (24- to 36-grit) Sandpaper that's 24- or 36-grit is used mainly for sanding down hardwood floors in tandem with a drum sander.

Sandpaper is one of the more versatile items to have for any DIY project, useful for a variety of applications. Whether you're smoothing out wood to give it a fresh coat of paint or prepping metal ...