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boring bar
noun
- Metalworking. a bar holding a tool for boring a cylinder or the like.
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Word History and Origins
Origin of boring bar1
First recorded in 1835–45
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Example Sentences
The boring bar is counterbalanced by a weight within the frame.
From Project Gutenberg
At the same time, the bore is finished by a cutter in boring-bar D (Fig. 4).
From Project Gutenberg
This head is also driven by a key which engages a keyway in the boring-bar.
From Project Gutenberg
Next, the boring-bar m1 is brought into position, the drill support being swung back out of the way.
From Project Gutenberg
In the first operation, boring-bar m is brought in line with the spindle and is entered in bushing r in the chuck.
From Project Gutenberg
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