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boring mill
noun
- Metalworking. a machine for boring large holes in heavy work, having a table on which the work rotates while the hole is bored vertically.
boring mill
noun
- engineering a large vertical lathe having a rotating table on which work is secured. Tools are held on a fixed post and the work is rotated around it Also called (informal)roundabout
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Word History and Origins
Origin of boring mill1
First recorded in 1825–35
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Example Sentences
The vertical boring mill is used extensively for turning large wheels, as explained in Chapter VI.
From Project Gutenberg
The turning of flywheels is a common vertical boring mill operation, and this work will be referred to in detail later on.
From Project Gutenberg
It is known as a “vertical turret lathe,” but resembles, in many respects, a vertical boring mill.
From Project Gutenberg
Very often more than one tool is used at a time, as will be shown later by examples of vertical boring mill work.
From Project Gutenberg
This is especially true of the heavy parts for which the boring mill is principally used.
From Project Gutenberg
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