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Sandpaper is a form of paper where an abrasive material has been adhered to its surface. It is used to remove small amounts of material from surfaces, either to make them smoother (painting and lacquering), to remove a layer of material (e.g. old paint), or sometimes to make the surface rougher (e.g. as a preparation to glueing).There are countless varieties of sandpaper, with variations in the paper, the glue (water-resistant or water soluble), the material for the abrading particles ( glass powder, sharp sand, corundum, carborundum, diamond), the grain size, the distance between the particles, and the shape of the sheet. Shark skin has been used as a substitute sandpaper.
The first recorded instance of sandpaper was in 13th century China when crushed shells, seeds, and sand were bonded to parchment using natural gum.
Sandpaper has occasionally been used as a surface for painting, as by Joan Miro.
Sandpaper was patentA patent is a set of exclusive rights granted by a government to an inventor or applicant for a limited amount of time (normally 20 years from the filing date). The term "patent" originates from the term patere which means to lay open (to public inspectioed in the United StatesThe United States of America also referred to as the United States U. America ¹ or the States is a federal republic in central North America, stretching from the Atlantic in the east to the Pacific Ocean in the west. It shares land borders with Canada in on June 14June 14 is the 165th day of the year in the Gregorian calendar (166th in leap years), with 200 days remaining. Events 1381 King Richard II of England meets the leaders of Peasants Revolt. 1645 English Civil War: Battle of Naseby 12,000 Royalist forces are 1834Events January 1 Abolition of customs charges at borders within Germany. January 3 The government of Mexico imprisons Stephen F. Austin in Mexico City March 6 York, Upper Canada is incorporated as Toronto. March 18 The Tolpuddle Martyrs, six Dorset farm l by Isaac FischerIsaac Fischer Jr. of Springfield, Vermont, is an inventor, best known for patenting a process for making sandpaper. He received his patent for the process on June 14, 1834., Jr., of Springfield, VermontSpringfield is a town located in Windsor County, Vermont. As of the 2000 census, the town had a total population of 9,078. Economy & History Springfield is the center of the Precision Valley region, which was the home of the Vermont machine tool industry..
