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Punchcutting is a craft used in traditional typography to cut letter punches in steel as the first stage of making metal type. [1] Steel punches in the shape of the letter would be used to stamp matrices into copper, which were locked into a mould shape to cast type. Cutting punches and casting type was the first step of traditional typesetting ...
However, Korean movable metal type printing differed from European printing in the materials used for the type, punch, matrix, mould and in method of making an impression. [36] The techniques for bronze casting, used at the time for making coins (as well as bells and statues) were adapted to making metal type.
A piece of cast metal type, Garamond style long s / i ligature.See also: movable type. Modern typographers view typography as a craft with a very long history tracing its origins back to the first punches and dies used to make seals and coinage currency in ancient times.
A composing stick loaded with metal movable type, held over a lower case with larger boxes for more common minuscule letters: the upper case holds capital letters. A Miller & Richard composing stick, showing the adjustment mechanism (left side)
The punch force required to punch a piece of sheet metal can be estimated from the following equation: [4] F = 0.7 t L ( U T S ) {\displaystyle F=0.7tL(UTS)} Where t is the sheet metal thickness, L is the total length sheared (perimeter of the shape), and UTS is the ultimate tensile strength of the material.
Manual nibbler, punch-and-die type. A nibbler, or nibblers, [1] is a tool for cutting sheet metal with minimal distortion. They may be used for nibbling.One type operates much like a punch and die, with a blade that moves in a linear fashion against a fixed die, removing small bits of metal and leaving a kerf approximately 6 mm (0.24 in) wide.
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