Diamond needles are used for straightening single-threaded grinding wheels and for straightening abrasive wheels when grinding high-precision threads.
The working part of the diamond needle is made in the form of a quadrangular pyramid. The use of a diamond needle allows you to get a more accurate profile of a single-threaded grinding wheel compared to the use of diamond in a frame or diamond pencil. Diamond needles are made of different diameters and carats with natural or synthetic diamond.
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