Grit numbers range from 24 (extra-coarse) all the way up to over 1000—though most home improvement projects use sandpaper in ...

For wood projects, the right sandpaper grit or set of incremental grits is determined by the nature of the finishes ...

and 120-grit sandpaper for three minutes each. I used this Dura-Gold set to ensure consistency between sanders and then compared their stock removal speed and effectiveness along the way.