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  2. Ring binder - Wikipedia

    en.wikipedia.org/wiki/Ring_binder

    A ring binder, folded A Swiss "federal binder" (32 cm × 28 cm × 7 cm or 12.6 by 11.0 by 2.8 inches), created in 1908. Ring binders (loose leaf binders, looseleaf binders, or sometimes called files in Britain) are large folders that contain file folders or hole punched papers (called loose leaves). These binders come in various sizes and can ...

  3. Core (manufacturing) - Wikipedia

    en.wikipedia.org/wiki/Core_(manufacturing)

    Core (manufacturing) A core is a device used in casting and moulding processes to produce internal cavities and reentrant angles (an interior angle that is greater than 180°). The core is normally a disposable item that is destroyed to get it out of the piece. [1] They are most commonly used in sand casting, but are also used in die casting ...

  4. Sand casting - Wikipedia

    en.wikipedia.org/wiki/Sand_casting

    Sand casting. The cope and drag (top and bottom halves, respectively) of a sand mold, with cores in place on the drag. Two sets of castings (bronze and aluminium) from the above sand mold. Sand casting, also known as sand molded casting, is a metal casting process characterized by using sand —known as casting sand —as the mold material.

  5. Coil binding - Wikipedia

    en.wikipedia.org/wiki/Coil_binding

    Plastic spiral binding is a three-step process: punch, insert, crimp. [citation needed] First, a punch creates holes along the edge of the document. Second, a coil inserter spins the coils through the holes. Third, a pair of coil crimping pliers or a crimping machine is used to cut off the excess coil and crimp the end to prevent the coil from ...

  6. Loose leaf - Wikipedia

    en.wikipedia.org/wiki/Loose_leaf

    The binder is typically metal, but some slim binders (mainly manufactured by Japanese companies such as Kokuyo, MUJI and King Jim) may be made of plastic. In North America, 3-hole binders for letter-size papers typically have a width of 1/2 inch, 1 inch, 1.5 inches, 2 inches, 3 inches or 4 inches; in ISO system, binders typically have a width ...

  7. Bookbinding - Wikipedia

    en.wikipedia.org/wiki/Bookbinding

    Bookbinding is the process of building a book, usually in codex format, from an ordered stack of paper sheets with one's hands and tools, or in modern publishing, by a series of automated processes. Firstly, one binds the sheets of papers along an edge with a thick needle and strong thread. One can also use loose-leaf rings, binding posts, twin ...

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