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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 ...
Walbaum was a punchcutter, who carved steel punches used as a master to stamp matrices, the moulds used to cast metal type. [8] Walbaum was born in Steinlah, a district of the town of Haverlah in modern Lower Saxony .
The set of wafer-like metal stamp types could be assembled to form pages, inked, and page impressions taken from rubbings on cloth or paper. [17] In 1322, a Fenghua county officer Ma Chengde ( 馬称德 ) in Zhejiang, made 100,000 wooden movable types and printed the 43-volume Daxue Yanyi ( 《大學衍義》 ).
More specifically: [1] Blanking punch – performs a dual-purpose operation where either a profiled slug, called the blank, is cut out and used for further working, or where a finished piece is cut free from the sheet metal. Pierce punch – cuts a desired shape (circular, polygonal, etc.) out of the workpiece. The slug is discarded.
After programming the work pieces and entering length of bars the control automatically calculates the maximum number of pieces to be punched (for example, 18 pieces of a bar of 6000 mm). Once the desired number of work pieces is entered, the bar is pushed toward the stop. The machine is fully automated once the production process is launched.
A coin with one type of metal in the center with an outer ring of a different metal. Examples are the 1 and 2 Euro coins and the Canadian "toonie" two-dollar coin. blank. Also called a planchet or flan. 1. A prepared disk of metal on which the design for a coin will be stamped. [1] 2. The un-struck or flat side of a uniface coin or medal. brass
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