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Sandpape grit conversion chart3/10/2024 ![]() ![]() Medium grit sandpaper, ranging from 80 to 120, is suitable for general sanding and smoothing rough wood surfaces. Lower grit numbers, such as 40 to 60, are considered coarse and are ideal for heavy material removal and shaping wood. MM Micro-mesh grit in comparison to other standards. The grit size of sandpaper refers to the number of abrasive particles per square inch. A Micron row is added to each FEPA P, FEPA F, JIS und ANSI row for comparison. As measuring unit it describes 1 thousandth of a millimeter (1 μ = 0.001mm). MICRON (μ) is the letter “micron” in the Greek alphabet. JIS(Japanese Industrial Standard) issued by the Japanese Standards Association.ĪNSI American National Standards Institute. The FEPA distinquishes between grain for sanding paper (FEPA P) and grain for sharpening stones or wheels (FEPA F) The decisive factor for comparison is FEPA F. FEPA PįEPA(Fédération Européenne des Fabricants de Produits Abrasifs) Federation of European Producers of Abrasives. The grit sizes are defined by the number of lines per inch (25,4 mm) length of each sieve e.g. Turners prefer these papers for lathe work because of their excellent flexibility.Here is a grit size comparison chart that will come in useful when comparing across different grit systems! They are particularly well-suited for exacting work. These are highly flexible carborundum-coated, cotton-backed papers, fully synthetic resin-bonded, suitable for most metals and various materials, including wood. ![]() Our metal-sanding papers are also produced by "ERSTA". This full-size chart, ranging from 4125 down to 0. The abrasive surface contains dust-repelling additives, giving it a considerably longer life than comparable papers. Latex added to its backing makes "ERSTA SUPER CUT" paper flexible. The abrasives in "ERSTA SUPER CUT" papers are fully synthetic resin-bonded and should not be confused with cheap flint papers or partially resin-bonded papers - even with those from the same manufacturer. This is desirable particularly with soft materials such as wood, because it is not as likely to gouge. The abrasive used is aluminum oxide, which is not as hard as silicon carbide, and not quite as sharp. Because the paper is not as densely coated as waterproof papers, it is does not load up as quickly. Garnet sandpaper is used for polishing and fine sanding of multiple materials and wears quickly. "ERSTA" papers can also be used on lacquered surfaces and synthetics. Our Recommendation: 3M Garnet Sandpaper at Amazon for 6.49. "ERSTA" produces the ideal sandpaper for wood. If you frequently use oil when sanding, we recommend Micro-mesh! "MATADOR" sandpaper can also be used with oil, at least short-term. It can be used dry, but will load up more quickly than papers designed specifically for dry use because of its high-density abrasive coating. Fine sandpaper is perfect for smoothing walls prior to painting. These sandpapers can be made from emery, aluminium oxide, or silicon carbide the latter of which can be used with water as a lubricant for an even smoother finish. It is available in grit sizes up to 7000. For most DIYers and amateur decorators, fine sandpaper with a grit of 120 to 220 is ideal. When used wet, it is suitable for lacquered surfaces, as well as metal and wood. "MATADOR" brand paper is waterproof, fully synthetic resin-bonded to flexible paper, densely coated with silicon carbide, and can be used wet or dry. We stock "MATADOR" and "ERSTA" brand papers, made in Germany, and well-known for their high quality. Now, however, almost all work requiring hand sanding can be now be accomplished with the three varieties of sandpapers that we offer. ![]() Unfortunately this is not the case, because different projects require different characteristics in the abrasive materials needed to finish them. There are times when we all wish that we could finish a project with one grade of sandpaper, avoid the often tedious job of selecting the proper grit, and not have to keep a supply of different grits on hand.
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