Diamond drill bit

Diamond drill bit

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Credit: SCIENCE PHOTO LIBRARY

Caption: Close-up view of a drill bit encrusted with tiny diamonds. The tiny diamonds are encased in a metal matrix to bind them to the drill bit. This is used to cut, polish or trim metal components. The diamonds used are flawed, from a type known as bort' that have no use as gemstones. Diamond tools have a high efficiency, require a low grinding force (with lower frictional heating) and are wear-resistant.

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Keywords: abrading, abrasion, abrasive, application, carbon, diamond, diamond-tipped, drill bit, drill-bit, drillbit, gem, gemstone, grind, grinder, grinding, hard, hardness, industrial, industry, mechanical, metal matrix, microscopic, power, school science, science education, smoothing, stone, tiny, tip, tool, use

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