Each successive grit erases the scratches of the coarser one before, until the scratches themselves become undetectable to the eye and the touch. Sandpaper 120 To 3000 Grit Dry Wet Sandpaper for wood 9 x 3.6 Inches, Metal Sanding and Automotive Polishing Wood Furniture Finishing, Dry or Wet Sanding,42-Sheet 363 See product details 320 to 400 Grit Sandpaper: Very fine grit sandpaper is used for light sanding between coats of finish and to … You can finish-sand both of these surfaces with #180 grit, for example, but you might begin with #80 grit on the solid wood and #120 grit on the plywood. Besides knowing what grit sandpaper to remove paint from wood, it is also essential to know the types that cannot get the task done: The fine sandpaper with a grit level of P500-P1200. The higher the number, the finer the grit, and the less rough the sandpaper.

Very fine sandpaper grit is used for sanding over bare wood. Micro Grits.

180 to 220 Grit Sandpaper: Finer grit sandpaper is great for removing the scratches left by coarser grits on unfinished wood and for lightly sanding between coats of paint.
The very fine sandpaper which has a grit grading of P1200 or more. To prepare bare wood for paint, for instance, Norm starts with 80-grit paper, followed by 100, 120, 150, and 180, and finishes up with 220. The project you are working on will determine the sandpaper grit you should use, as well as the best wood finish for the look you are trying to achieve. The one thing various sandpapers have in common is the grit system. It would be a total waste of time and effort to begin with #80 grit on the pre-sanded veneered wood (and you would risk sanding through). Remember to take it easy while sanding so as not to cause damage to your wood. As per FEPA standards, such sandpaper grit is denoted by P150, P180, and P220, while CAMI standards denote them as 150, 180, or 220. Sandpaper materials are rated for coarseness or fineness by their grit number. Coarse sandpaper removes material faster but leaves deep scratches.

The diameter of the particles ranges between 66 to 100 micrometers.