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  2. Mechanical pencil - Wikipedia

    en.wikipedia.org/wiki/Mechanical_pencil

    Conrad Gessner described a lead holder pencil in 1565, but the lead had to be manually adjusted to sharpen it. [2] The earliest extant datable example of a mechanical pencil was found aboard the wreckage of HMS Pandora , which sank in 1791.

  3. Pencil sharpener - Wikipedia

    en.wikipedia.org/wiki/Pencil_sharpener

    The graphite lead is then honed to a sharp point with a lead pointer, which sharpens only the lead without wood. Lead pointers are also used with mechanical leadholders, with thicker diameter leads like 2 mm which have removable/refillable leads. Some sharpeners which function as a long point sharpener, have a second hole in which the blade ...

  4. 23 Adorably Absurd Stationery Items That’ll Keep You Grinning ...

    www.aol.com/23-adorably-absurd-stationery-items...

    #17 Roar With Delight And Sharpen Your Workspace With The Prehistoric Perk Of Dinosaur Pencil Holder Review: "Cuter than in the picture. This dino makes me smile everytime I see it.

  5. Sharpness (cutting) - Wikipedia

    en.wikipedia.org/wiki/Sharpness_(cutting)

    Sharpened metal drop-point blade Naturally occurring sharp obsidian piece Shark tooth with a sharp, serrated edge A sewing needle comes to a sharp point. Sharpness refers to the ability of a blade, point, or cutting implement to cut through materials with minimal force, and can more specifically be defined as the capacity of a surface to initiate the cut. [1]

  6. How to Sharpen Tweezers with This Genius Hack - AOL

    www.aol.com/sharpen-tweezers-genius-hack...

    You know how the saying goes—eyebrows are the window to the soul (or they might as well be). But trying to shape your brows with dull tweezers is a pointless (and highly frustrating) exercise.

  7. Tumbler knife sharpener review, after weeks of testing - AOL

    www.aol.com/news/tumbler-knife-sharpener-review...

    The block also has four angles for sharpening rather than just two (meaning you can more easily sharpen knives at a more particular angle) though at $150 it’s more expensive than the Tumbler.

  8. Sharpening - Wikipedia

    en.wikipedia.org/wiki/Sharpening

    The substance on the sharpening surface must be harder (hardness is measured on the Mohs scale) than the material being sharpened; diamond is extremely hard, making diamond dust very effective for sharpening, though expensive; less costly, but less hard, abrasives are available, such as synthetic and natural Japanese water-stones. Several ...

  9. File (tool) - Wikipedia

    en.wikipedia.org/wiki/File_(tool)

    Saw sharpening files are usually single cut to deliver a smooth finish. They are suited to sharpening saw blades and dressing tool edges, especially where a finer, sharper edge or smoother surface finish is desired. The Chainsaw file is one example, used primarily for sharpening chainsaws. These appear to have a round cross-section, but are ...

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