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  2. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The included angle of the spotting drill bit should be the same as, or greater than, the conventional drill bit so that the drill bit will then ...

  3. Dental drill - Wikipedia

    en.wikipedia.org/wiki/Dental_drill

    The free running speed of 1:5 gear ratio electric handpiece is the same as its cutting speed; thus, 40,000 motor speed x 5 = 200,000 rpm burr speed. The electrical motor maintains the 200,000 rpm speed and provides consistent power, so torque will be maintained, depending on the electronic control parameters.

  4. High-speed steel - Wikipedia

    en.wikipedia.org/wiki/High-speed_steel

    High-speed steel (HSS or HS) is a subset of tool steels, ... It is usually used to manufacture a variety of tools, such as drill bits, taps and reamers. 1.3343 is the ...

  5. Sharpening - Wikipedia

    en.wikipedia.org/wiki/Sharpening

    A hand-held tungsten carbide knife sharpener, with a finger guard, can be used for sharpening plain and serrated edges on pocket knives and multi-tools.. Sharpening is the process of creating or refining a blade, the edge joining two non-coplanar faces into a converging apex, thereby creating an edge of appropriate shape on a tool or implement designed for cutting.

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  7. The Home Depot Pro - Wikipedia

    en.wikipedia.org/wiki/The_Home_Depot_Pro

    The Home Depot Pro, headquartered in Jacksonville, Florida, is a wholesale distributor and direct marketer of maintenance, repair and operations (MRO) products for non-industrial businesses in the United States.