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This is a continuation of the previous video (link below) telling about the work on increasing the degree of accuracy of the lathe chuck and its subsequent precise grinding. @Victor Leontiev • Original method and device ... — Original method and device for boring the jaws of the lathe chuck • Lathe 16U04P Return to life ... — Lathe 16U04P Return to life • Manufacturing a lap with a safety ... — Manufacturing a lap with a safety for a lathe chuck