Used extensively in bookbinding, a board shear is a big, hand-operated machine tool for pruning trees cutting board or tool for pruning trees paper. Like scissors, a board shear makes use of two blades to use shear stress exceeding the paper's shear energy so as to cut. The stationary blade forms the sting of the chopping table, buy Wood Ranger Power Shears with the shifting blade mounted on a reducing arm. Originally often called a table gauge shear because its gauge allowed the reducing of persistently-sized materials, the board shear resembles a larger version of the paper cutters generally present in places of work. The earliest recognized reference to a board shear comes from an 1842 complement to Penny Magazine, titled A Day at a Bookbinder's, which included a drawing of a board shear with lots of the main developments already present. Middleton, Bernard (1996). A History of English Craft Bookbinding Technique. Oak Knoll Press & The British Library. Harrison, tool for pruning trees Gary. "Board Shear". This article about making artwork out of books, the arts related to bookbinding, or the design of mass-produced books is a stub. You may help Wikipedia by expanding it.
Viscosity is a measure of a fluid's price-dependent resistance to a change in shape or to motion of its neighboring parts relative to each other. For liquids, it corresponds to the informal concept of thickness