![]() 120-grit (CAMI) sandpaper corresponds closely to (FEPA) P-120 or P-150.100-grit (CAMI) sandpaper corresponds closely to (FEPA) P-100 or P-120.80-grit (CAMI) sandpaper corresponds closely to (FEPA) P-80 or F-100.40-grit (CAMI) sandpaper corresponds closely to (FEPA) P-36 or P-40.FEPA sizes are not an identical match to CAMI sizes, but you can get something very close by selecting one of the two closest FEPA numbers. While there are too many grit gradations to list, if you’re buying FEPA-sized sandpaper, the following commonly used CAMI sizes will give you an idea of the corresponding FEPA sizes. Grit sized with the FEPA scale is indicated by the letter “P” preceding the grit number. Most sandpaper you buy at DIY centers and lumberyards will bear the CAMI scale, but if you order sandpaper online, you may run across sandpaper grit sized by the Federation of European Producers of Abrasives (FEPA). The small grains on the sandpaper measure approximately 141 microns in size, which is equivalent to. On the CAMI scale, sandpaper grit is measured in microns, and to get an idea of how small a micron is, check out a piece of 100-grit sandpaper. And, conversely, lower numbers indicate larger grains and overall coarser sandpaper.The higher the number, the smaller the grains and the finer the sandpaper grit.When shopping for sandpaper, you’ll see numbers such as 80-grit, 100-grit, or 200-grit. In the United States, grit is determined based on a gradation scale established by the Coated Abrasive Manufacturers Institute (CAMI). RELATED: 9 Clever Alternative Uses for Sandpaperĭistinguishing sandpaper grit sizes is important because not every project requires the same. The particles (also known as grains or grit) are sifted through screens and sorted by size before being bonded with adhesive to a paper, sponge, or cloth-type backing to create an abrasive material that’s handy in a number of do-it-yourself situations. Sandpaper isn’t made of sand, of course, but rather it consists of fine particles from either natural or synthetic sources. Finding the right tool for the easiest effort.Īfter you have a few completed projects under your belt, you’ll be an old pro at picking just the right sandpaper.Considering the best type of grit to choose, and.Choosing the appropriate coarseness for the project,.Selecting the right size of sandpaper grit,.Warm up with these basic recommendations and rules of thumb. ![]() For an extra high glossy finish, use the Alpha® Felt Wheel with a buffing compound to finish the polishing process.Different sandpaper grits perform very different jobs, and selecting the right grit can be confusing when you’re starting out. Used with our standard backer pads, our Twistouch backing system or the GV5000 backer pad, Alpha® Sandpaper is sure to give you the best results. Alpha® Sandpaper can also be used to polish glass, metal and wood. Silicon Carbide is the abrasive of choice for sanding and polishing marble, travertine, terrazzo and onyx. The hook and loop backing makes disc changes simple. The discs can be used dry if necessary and are very durable. Alpha® Sandpaper resists clogging when used wet, thus extending the life of the disc. Restoration workers can polish wide areas quickly without difficulty. Tile contractors find Alpha® Sandpaper to be very adaptable to onsite work and easy to use. Marble fabricators find Alpha® Sandpaper to be effective and durable. Product Description Alpha® Sandpaper discs consist of a waterproof hook and loop backed material combined with a silicon carbide abrasive, which is the perfect combination for use on marbles and softer types of natural stone.
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