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  2. Trepanning - Wikipedia

    en.wikipedia.org/wiki/Trepanning

    Trepanning, also known as trepanation, trephination, trephining or making a burr hole (the verb trepan derives from Old French from Medieval Latin trepanum from Greek trúpanon, literally "borer, auger"), [1] [2] is a surgical intervention in which a hole is drilled or scraped into the human skull.

  3. Sewing needle - Wikipedia

    en.wikipedia.org/wiki/Sewing_needle

    A sewing needle. A sewing needle, used for hand-sewing, is a long slender tool with a pointed tip at one end and a hole (or eye) to hold the sewing thread.The earliest needles were made of bone or wood; modern needles are manufactured from high carbon steel wire and are nickel- or 18K gold-plated for corrosion resistance.

  4. Sewing machine needle - Wikipedia

    en.wikipedia.org/wiki/Sewing_machine_needle

    The majority of sewing machine needles are made of various grades of hardened steel coated with either nickel or chromium, though certain specialty needles are coated with titanium nitride on top of chromium. Titanium nitride is a reflective golden-colored ceramic material which reduces abrasion allowing the needle to stay sharper longer and ...

  5. Stitching awl - Wikipedia

    en.wikipedia.org/wiki/Stitching_awl

    A stitching awl is a tool with which holes can be punctured in a variety of materials, or existing holes can be enlarged. It is also used for sewing heavy materials, such as leather or canvas. It is a thin, tapered metal shaft, coming to a sharp point, either straight or slightly bent. These shafts are often in the form of interchangeable needles.

  6. Torrington Company - Wikipedia

    en.wikipedia.org/wiki/Torrington_Company

    The Torrington Company was a firm that developed in Torrington, Connecticut, originally called the Excelsior Needle Company.It was formed in 1866 around the new idea of using a "cold swaging" technique to create better sewing machine needles, as Torrington expanded, it began to produce other goods.

  7. Why some people have a small hole in front of their upper ears

    www.aol.com/lifestyle/2016-11-29-why-some-people...

    It is called preauricular sinus which, according to the U.S. National Institutes of Health, or NIH, "generally appears as a tiny skin-lined hole or pit, often just in front of the upper ear where ...

  8. What causes pins and needles? Experts explain. - AOL

    www.aol.com/lifestyle/causes-pins-needles...

    “Pins and needles commonly occur in the arms, hands, legs and feet when sitting or sleeping on a body part that affects the nerve,” Dr. Laura Sander, northeast regional medical director at ...

  9. Sewing-Machine Needles - Wikipedia

    en.wikipedia.org/wiki/Sewing-Machine_Needles

    Needles is now considered the more suitable descriptive term; an earthquake tremor in 1924 caused the arch to collapse. The name Rocas Ministro Ezcurra was given by Dr Douglas (later Sir Douglas) Mawson, leader of the Australasian Antarctic Expedition of 1912-14. [2] These rocks are remnants of a tuff cone, part of the Baily Head Formation. [3]

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