45Pcs Wet Dry Sandpaper, 400/600/ 800/1000/ 1200/1500/ 2000/2500/ 3000 Grit Assorted Sanding Sheets for Automotive Polishing, Metal Sanding, Wood Furniture Finishing, 9 x 3.6 Inch by BAISDY

Product Information

Large particles fit through larger holes. Because they’re larger, a standard filtering screen requires fewer of them. Consequently, coarser grits are known by smaller numbers than finer grits, much like larger-diameter wires have smaller gauge numbers in the American Wire Gauge system.

Grit measures sandpaper’s coarseness, determined by the size of the abrasive particles on its surface.

In this post: Have you ever begun a DIY project, only to wonder which sandpaper you should start with or which one to use between coats of paint or poly? Here are the most common sandpaper grits and their uses as a handy reference!

If you are in the market for sandpaper for wood, wallpaper, or metal, the 3M 9017 coarse-grit sandpaper is a great option for rough sanding. One of the many happy customers explained that it “works so much better than generic brands.” Grit describes the sandpaper's abrasiveness and whether it is fine or coarse. A larger grit number indicates finer sandpaper, which is ideal for producing a smooth surface. Sandpaper with a lower grit number is coarser and rougher, so if you merely need to swiftly scrape dirt, and other things off of a flat surface, a scrubbing pad with a coarse grit is your best bet.

Extra-coarse (24-, 30- and 36-grit): Generally used for preliminary hardwood floor sanding, this usually comes in belts that fit on a drum sander, or disks that fit an edger. Super-fine (400-, 500- and 600-grit): Use this for polishing finishes on wood and metal, and to polish bare metal. It comes on waterproof sheets to allow for wet-sanding.The most commonly used sandpaper grits are 80, 120 and 220. In fact, you can likely get away with having only those three grits of sandpaper on hand for typical do-it-yourself projects. You could use 120 as a medium, do all the things sandpaper, 80 grit if you want to really rough up a finish or do a little shaping and 220 grit for final sanding between coats of paint or poly. Because coarse and fine sandpaper grits are used differently, manufacturers established grades — each consisting of one or more grit numbers — to help consumers decide which type fits a particular purpose. The coarsest grade, designated as extra-coarse, includes 24-, 30- and 36-grit paper. The finest grade (i.e. ultra-fine) includes 800- and 1,000-grit paper. Very-fine (150-, 180- and 220-grit): This produces ultra-smooth surfaces on wood. People often use it to scuff-sand lacquer, polyurethane and other finishes before applying another coat. Sandpaper Grits and Their Uses The most commonly used sandpaper grits are 80, 120 and 220. In fact, you can likely get away with having only those three grits of sandpaper on hand for typical do-it-yourself projects. You could use 120 as a medium, do all the things sandpaper, 80 grit if you want to really rough up a finish or do a little shaping and 220 grit for final sanding between coats of paint or poly. It comes with a company guarantee that it will not discolor any surfaces you are using it on. One of the many satisfied customers commented that it “works well, doesn't clog much, lasts forever compared to budget papers. So worth the extra money, as it goes 20 times longer than the cheap stuff.”