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It features tough aluminum oxide abrasive that self-fractures during use for longer life. Abrasive is built on a choice of paper backing from light A-weight paper to heavier D-weight paper for jobs requiring extra support.

The durable, flexible backing stands up to your toughest jobs, and this versatile sandpaper is great for wet sanding and dry sanding. Whether you're prepping new drywall for painting or smoothing drywall mud, rely on the sanding power of 3M™ Pro Grade Precision™ Faster Sanding Drywall Sandpaper.

Sandpaper is produced in a range of grit sizes and is used to remove material from surfaces, whether to make them smoother (for example, in painting and wood finishing), to remove a layer of material (such as old paint), or sometimes to make the surface rougher (for example, as a preparation for gluing).

The European scale is the “P” grade, and is known as FEPA (Federation of European Producers of Abrasives). Both scales are based on the diameter of the average particle size in micrometer (µm), also know as a micron (one millimeter equals one thousand microns).

Well, Gritty, sandpaper isn't made of ordinary sand. You see, sandpaper is made of abrasive minerals like aluminum oxide or garnet that are glued onto a paper backing. These minerals have sharp points or edges, and that's why sandpaper is considered a cutting tool like a saw or a chisel.

Well, Gritty, sandpaper isn't made of ordinary sand. You see, sandpaper is made of abrasive minerals like aluminum oxide or garnet that are glued onto a paper backing. These minerals have sharp points or edges, and that's why sandpaper is considered a cutting tool like a saw or a chisel.

Materials used to make sandpaper include aluminum oxide, ceramic, flint, garnet and silicon carbide.

Wet sanding is a sanding process that uses water or another liquid as lubrication to wash away grit particles. Without the liquid, the sandpaper can build up with material, causing scratches that ruin the finish.

Dry is excellent for initially smoothing a material, whereas using a wet sandpaper can drastically improve upon the smoothness while removing scratches. Depending on the type of material you're working with determines which sanding method is better for you. Dry will do most of the hard work that's usually necessary.

The most common include 60-80 grit (coarse), 100-150 grit (medium), 180-220 grit (fine) and 320 grit (ultra-fine). There are also different types of sandpaper, such as ceramic alumina, silicon carbide and aluminium oxide.

Well, Gritty, sandpaper isn't made of ordinary sand. You see, sandpaper is made of abrasive minerals like aluminum oxide or garnet that are glued onto a paper backing. These minerals have sharp points or edges, and that's why sandpaper is considered a cutting tool like a saw or a chisel.

Sandpaper Rating Scales Explained The differences between the two scales is minimal in the coarser grits. In finer grits, a P-scale sandpaper will be coarser compared to an ANSI sandpaper with the same grit number. When choosing sandpaper above P600 or its equivalent, it's very important to know which scale it is.

You've probably noticed that the grit of some sandpaper is preceded by the letter "P". The "P" means that the abrasive is produced to the standards set out by the Federation of European Producers of Abrasives (FEPA).

Creating a sharp edge. The paper now officially sand paper is brought back upstairs and into a large oven where it is baked. Once cured the sandpaper gets another coat of resin to improve durability.

The most common natural minerals used in abrasives are emery and garnet, while four common manmade types are silicon carbide, aluminum oxide, ceramic alumina and alumina- zirconia.