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2. Mechanical pencil - Wikipedia

   en.wikipedia.org/wiki/Mechanical_pencil

   Lead sharpener/pointer and 2mm pencil lead in a clutch-type leadholder. A mechanical crayon holder by Caran d'Ache. In spite of the name, pencil leads do not contain the toxic chemical element lead, but are typically made with graphite and clay, or plastic polymers. The downside of mechanical leads are that they are not as strong as traditional ...

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. 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 ...

5. 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.

6. 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]

7. How To Sharpen Your Chainsaw Like a Pro - AOL

   www.aol.com/lifestyle/sharpen-chainsaw-pro...

   An expert's advice for getting a sharp chain in just 10 minutes.

8. Jointing (sharpening) - Wikipedia

   en.wikipedia.org/wiki/Jointing_(sharpening)

   Jointing is usually the first step in the process of sharpening: When sharpening a hand saw blade, the teeth are jointed by running a flat file over the tips of the teeth so that they are all of the same height. Circular saw blades are jointed prior to sharpening so that all teeth protrude from the blade the same distance from the centre.

9. How Often Should You Sharpen Your Lawn Mower Blades? 10 ... - AOL

   www.aol.com/often-sharpen-lawn-mower-blades...

   Setting a regular sharpening schedule is the best way to keep the lawn mower blades sharp and in top condition, but there are also several signs you can look out for that can indicate that it ...