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Annular cutter - Wikipedia ... Annular cutter
Drill bit - Wikipedia ... Drill bit
Milling cutter - Wikipedia ... Milling cutter
High-speed steel
Drill cuttings [1] are broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods and brought to the surface in the drilling mud. Boreholes drilled in this way include oil or gas wells , water wells , and holes drilled for geotechnical investigations or mineral exploration.
Surface finishing
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