Home > Term: fir-tree bit
fir-tree bit
A rotary bit in which a number of cutting edges are arranged behind a pilot bit to enlarge the hole to the required diameter.
- Kalbos dalis: noun
- Pramonės šaka / sritis: Mining
- Category: General mining; Mineral mining
- Government Agency: USBM
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- ed.young
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(Milwaukee, United States)
