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When Drew joined 3M in St. Paul, Minnesota in 1921, it was a modest manufacturer of sandpaper.While testing their new Wetordry sandpaper at auto shops, Drew was intrigued to learn that the two-tone auto paintjobs so popular in the Roaring Twenties were difficult to manage at the border between the two colors.
The Klingspor Type Foundry was a German hot metal type foundry established in 1892 when Carl Klingspor bought out the Rudhard’sche Foundry of Offenbach. His sons, Karl and younger brother Wilhelm, took on the business in 1904, renaming the foundry Gebrüder Klingspor in 1906, and turned it into a major concern.
Sandpaper may be "stearated" where a dry lubricant is loaded to the abrasive. Stearated papers are useful in sanding coats of finish and paint as the stearate "soap" prevents clogging and increases the useful life of the sandpaper. The harder the grit material, the easier the sanding of harder surfaces like hardwoods such as hickory, pecan, or ...
Abrasives generally rely upon a difference in hardness between the abrasive and the material being worked upon, the abrasive being the harder of the two substances. However, it is not strictly necessary, as any two solid materials that repeatedly rub against each other will tend to wear each other away; examples include, softer shoe soles wearing away wooden or stone steps over decades or ...
Norton Abrasives of Worcester, Massachusetts, USA is the world's largest manufacturer and supplier of abrasives for commercial applications, household, and automotive refinishing usage. Norton Company was founded in 1885 by a group of ceramists and entrepreneurs from Worcester, Massachusetts.
Tungsten carbide is the liner material most often used for mineral abrasives. Silicon carbide and boron carbide nozzles are more wear resistant and are often used with harder abrasives such as aluminium oxide. Inexpensive abrasive blasting systems and smaller cabinets use ceramic nozzles.