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  2. Sharpening - Wikipedia

    en.wikipedia.org/wiki/Sharpening

    Drill bits - twist drills used for wood or steel are usually sharpened on a grinding wheel or within a purpose made grinding jig to an angle of 60° from vertical (120° total) although sharper angles may be used for hard or brittle materials such as glass.

  3. Tool and cutter grinder - Wikipedia

    en.wikipedia.org/wiki/Tool_and_cutter_grinder

    The machine is sometimes advertised as a "universal cutter-grinder", but the "universal" term refers only to the range of compound angles available, not that the machine is capable of sharpening the universe of tools. The machine is not capable of sharpening drill bits in the standard profiles, or generating any convex or spiral profiles.

  4. Grinding machine - Wikipedia

    en.wikipedia.org/wiki/Grinding_machine

    Tool and cutter grinder, which usually can perform the minor function of the drill bit grinder or other specialist toolroom grinding operations. Jig grinder, which as the name implies, has a variety of uses when finishing jigs, dies, and fixtures. Its primary function is in the realm of grinding holes for drill bushings and grinding pins. It ...

  5. Dremel - Wikipedia

    en.wikipedia.org/wiki/Dremel

    The Dremel relies on high speed, rather than the high torque of a conventional power drill. By inserting the appropriate bit (or burr), the tool can perform drilling, grinding, sharpening, cutting, cleaning, polishing, sanding, routing, carving, and engraving. Early cordless models were marketed as the Dremel Freewheeler.

  6. Grinding (abrasive cutting) - Wikipedia

    en.wikipedia.org/wiki/Grinding_(abrasive_cutting)

    A man grinding on metal using an angle grinder, causing a lot of sparks. Grinding is a type of abrasive machining process which uses a grinding wheel as cutting tool. A wide variety of machines are used for grinding, best classified as portable or stationary: Portable power tools such as angle grinders, die grinders and cut-off saws

  7. Sharpening jig - Wikipedia

    en.wikipedia.org/wiki/Sharpening_jig

    A sharpening jig is often used when sharpening woodworking tools. Many of the tools used in woodworking have steel blades which are sharpened to a fine edge. A cutting edge is created on the blade at the point at which two surfaces of the blade meet. To create this cutting edge a bevel is formed on the blade, usually by grinding.

  8. Speeds and feeds - Wikipedia

    en.wikipedia.org/wiki/Speeds_and_feeds

    Drill bit in a drill; Milling cutter in a milling machine; Router bit in a wood router; Shaper cutter or knife in a wood shaper or spindle moulder; Grinding wheel on a grinding machine. Excessive spindle speed will cause premature tool wear, breakages, and can cause tool chatter, all of which can lead to potentially dangerous conditions.

  9. Bench grinder - Wikipedia

    en.wikipedia.org/wiki/Bench_grinder

    A bench grinder is a benchtop type of grinding machine used to drive abrasive wheels. A pedestal grinder is a similar or larger version of grinder that is mounted on a pedestal , which may be bolted to the floor or may sit on rubber feet .

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