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  2. Disc cutter - Wikipedia

    en.wikipedia.org/wiki/Disc_cutter

    Often cutting discs, also known as cut-off wheels, are made from a solid abrasive disc. These discs are often used for cutting metal; they are composed of an abrasive mix of grit and adhesive that is formed into a thin, rigid disc with fiber webbing running through it for strength. Some discs used for cutting ceramic tile or stone are made from ...

  3. British Association screw threads - Wikipedia

    en.wikipedia.org/wiki/British_Association_screw...

    A 2BA thread is used to connect the metal barrel of a dart to its shaft — as such, it is one of the few common uses of this thread in North America. In the UK, 2BA threads are commonly found in the old imperial British Engineering Standards Association (BESA) conduit boxes , and 4BA threads in light switch and socket back boxes which are ...

  4. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

  5. British Standard Fine - Wikipedia

    en.wikipedia.org/wiki/British_Standard_Fine

    British Standard Fine (BSF) is a screw thread form, as a fine-pitch alternative to British Standard Whitworth (BSW) thread. It was used for steel bolts and nuts on and in much of Britain's machinery, including cars, prior to adoption of Unified, and later Metric, standards.

  6. 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 ...

  7. The Christmas Tree’s Royal Roots: How Queen Victoria ... - AOL

    www.aol.com/christmas-tree-royal-roots-queen...

    Queen Victoria has an evergreen connection to the Christmas tree.. The holiday decoration staple, which is ubiquitous this time of year, has royal roots that many may not know about — Queen ...

  8. Lamborghini in 'best shape ever' despite hiccups in China and ...

    www.aol.com/finance/lamborghini-best-shape-ever...

    Miami being in the US is a big factor, as it is the top market for the Italian luxury automaker, with Florida the second-biggest market for Lamborghini in the country, following California.

  9. Machining - Wikipedia

    en.wikipedia.org/wiki/Machining

    For example, a workpiece may require a specific outside diameter. A lathe is a machine tool that can create that diameter by rotating a metal workpiece so that a cutting tool can cut metal away, creating a smooth, round surface matching the required diameter and surface finish. A drill can remove the metal in the shape of a cylindrical hole.