Английская Википедия:D bit cutter

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Шаблон:Short descriptionШаблон:More citations needed

A D bit cutter is a specialty bit in the shape of a "D" when looking from above. Often used to make precision holes using a lathe.

This type of drill was first used in the early manufacture of muskets and other artifacts requiring a long straight holes in the days before modern accurate machines were available."[1]

References


Шаблон:Tool-stub