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2. Machine tool - Wikipedia

   en.wikipedia.org/wiki/Machine_tool

   A machine tool is a machine for handling or machining metal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformations. Machine tools employ some sort of tool that does the cutting or shaping. All machine tools have some means of constraining the workpiece and provide a guided movement of the parts ...

3. Hand tool - Wikipedia

   en.wikipedia.org/wiki/Hand_tool

   A hand tool is any tool that is powered by hand rather than a motor. [1] Categories of hand tools include wrenches, pliers, cutters, files, striking tools, struck or hammered tools, screwdrivers, vises, clamps, snips, hacksaws, drills, and knives . Outdoor tools such as garden forks, pruning shears, and rakes are additional forms of hand tools.

4. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   Taps and dies are tools used to create screw threads, which is called threading. Many are cutting tools; others are forming tools. A tap is used to cut or form the female portion of the mating pair (e.g. a nut ). A die is used to cut or form the male portion of the mating pair (e.g. a bolt ). The process of cutting or forming threads using a ...

5. Lathe - Wikipedia

   en.wikipedia.org/wiki/Lathe

   Modern metal lathe A watchmaker using a lathe to prepare a component cut from copper for a watch. A lathe (/ l eɪ ð /) is a machine tool that rotates a workpiece about an axis of rotation to perform various operations such as cutting, sanding, knurling, drilling, deformation, facing, threading and turning, with tools that are applied to the workpiece to create an object with symmetry about ...

6. Reamer - Wikipedia

   en.wikipedia.org/wiki/Reamer

   A typical reamer consists of a set of parallel straight or helical cutting edges along the length of a cylindrical body. Each cutting edge is ground at a slight angle and with a slight undercut below the cutting edge. Reamers must combine both hardness in the cutting edges, for long life, and toughness, so that the tool does not fail under the ...

7. 5 Best Hand Massagers with Compression, Heat & Cooling Features

   www.healthline.com/health/arthritis/best-hand...

   Best heated hand massager: Comfier Cordless Hand Massager with Heat. Best cold therapy hand massager: iECO Cryosphere Cold Massage Roller Ball. Best all-around hand massager: Healsmile Electric ...