Use 60- or 80-grit for aggressive, fast wood removal. Use 100-grit for all-purpose sanding and 120 or 180 for the finest finish, but follow power-tool sanding with hand sanding. Power tools leave hidden scratches that show up later. And always sand parallel to the grain.
Hereof, what is the most fine sandpaper?
Micro Grit Sandpaper
| Grade | Description | CAMI |
|---|---|---|
| Ultra Fine | Most delicate abrasives | 800 or 1000 |
| Super Fine | Slightly wipes away patches/small inconsistencies but not strong enough for removal | 400, 500 or 600 |
| Extra Fine | Slightly less fine and more abrasive than Super Fine | 360 or 320 |
| Very Fine | The least fine of the micro abrasives | 240 |