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2. 3-pronged parts retriever - Wikipedia

   en.wikipedia.org/wiki/3-Pronged_Parts_Retriever

   Three metal wires protrude from the other end, each sprung to bend outwards, away from the tube's axis, but with their tips bent inwards to form teeth. The push-button drives the wires down the tube, where their natural springiness causes them to spread further outwards, opening the teeth.

3. Burr (cutter) - Wikipedia

   en.wikipedia.org/wiki/Burr_(cutter)

   Hard metal or ceramic workpieces cannot flex beyond the cutting edges, so the tools remove material from them. This characteristic makes burrs suitable for use in dentistry, as the tool will grind the hard enamel of teeth, yet leaves soft mouth tissues unharmed if the tool should unintentionally touch them. [4]

4. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   While modern nuts and bolts are routinely made of metal, this was not the case in earlier ages, when woodworking tools were employed to fashion very large wooden bolts and nuts for use in winches, windmills, watermills, and flour mills of the Middle Ages; the ease of cutting and replacing wooden parts was balanced by the need to resist large amounts of torque, and bear up against ever heavier ...

5. Cutting tool (machining) - Wikipedia

   en.wikipedia.org/wiki/Cutting_tool_(machining)

   Cutting tool materials must be harder than the material which is to be cut, and the tool must be able to withstand the heat and force generated in the metal-cutting process. Also, the tool must have a specific geometry, with clearance angles designed so that the cutting edge can contact the workpiece without the rest of the tool dragging on the ...

6. Machine tool - Wikipedia

   en.wikipedia.org/wiki/Machine_tool

   It is a power-driven metal cutting machine which assists in managing the needed relative motion between cutting tool and the job that changes the size and shape of the job material. [1] The precise definition of the term machine tool varies among users, as discussed below. While all machine tools are "machines that help people to make things ...

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   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.