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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 .
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 ...
The holes are positioned symmetrically, with the centers 4 + 1 ⁄ 4 inches (108 mm) apart. It requires paper formats that are at least 9 + 1 ⁄ 2 inches (241 mm) high. There is a variant for half-letter size pages (8 + 1 ⁄ 2 by 5 + 1 ⁄ 2 inches or 220 mm × 140 mm), whose three holes are 2 + 3 ⁄ 4 inches (70 mm) apart.
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 ( ้ฆฌ็งฐๅพท ) in Zhejiang, made 100,000 wooden movable types and printed the 43-volume Daxue Yanyi ( ใๅคงๅญธ่ก็พฉใ ).
A center punch is used to mark the center of a point. It is usually used to mark the center of a hole when drilling holes. A drill has the tendency to "wander" if it does not start in a recess. A center punch forms a large enough dimple to "guide" the tip of the drill. The tip of a center punch has an angle between 60 and 90 degrees. [1]
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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