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2. Scissors - Wikipedia

   en.wikipedia.org/wiki/Scissors

   Scissors cut material by applying at the cutting location a local shear stress which exceeds the material's shear strength. Some scissors have an appendage, called a finger brace or finger tang, below the index finger hole for the middle finger to rest on to provide for better control and more power in precision cutting.

3. Sharpness (cutting) - Wikipedia

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

   Sharpness is also a critical attribute for man-made tools ranging from kitchen knives and scissors to industrial cutting equipment, as it allows the user of a sharp implement to efficiently penetrate surfaces, or neatly divide other materials into smaller portions as needed. A balance must be found between the sharpness and how well it can last.

4. Cutting - Wikipedia

   en.wikipedia.org/wiki/Cutting

   Even liquids can be used to cut things when applied with sufficient force (see water jet cutter). Cutting is a compressive and shearing phenomenon, and occurs only when the total stress generated by the cutting implement exceeds the ultimate strength of the material of the object being cut. The simplest applicable equation is:

5. The Best Scissors for Precise Cutting - AOL

   www.aol.com/lifestyle/best-scissors-precise...

   Whether you’re cutting paper figures or snipping loose threads, you’re going to want to cut with confidence. For precise cuts, choose a pair of scissors smaller than the average eight-inch ...

6. Snips - Wikipedia

   en.wikipedia.org/wiki/Snips

   Right cutting and left-cutting compound-action snips, respectively; the green snips are an offset-pattern Straight-cutting compound-action snips. Compound-action snips, also known as aviation snips, maille snips or sheet snips, are the most popular type of snips as they are able to exert a higher force compared to other types of snip of the same size, because of the design of their linkage.

7. Shear (sheet metal) - Wikipedia

   en.wikipedia.org/wiki/Shear_(sheet_metal)

   An alligator shear, historically known as a lever shear and sometimes as a crocodile shear, is a metal-cutting shear with a hinged jaw, powered by a flywheel or hydraulic cylinder. Alligator shears are generally set up as stand-alone shears; however, there are types for excavators. The jaw size can range from 4 to 36 in (100 to 910 mm) long.