The Moulders And Founders Pocket Guide a Treatise On Moulding And Founding
The Moulders And Founders Pocket Guide a Treatise On Moulding And Founding
Frederick Overman
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The materials in which impressions may be made, are wax, paper, whalebone, horn, glass, sulphur, and many other materials to be mentioned in the course of this chapter. Impres- sions are made in many materials, and a variety of operations in the useful arts depend upon this mani- pulation. The operations in the mint, and stamping of medals and utensils, as spoons, forks, and pans, are parts of this branch of art ; reliefs in copper, brass, and silver sheets, the pressing of wooden snuff or othe...r boxes, of handles for canes and umbrellas, of leather, cloth, and paper, all belong to a different branch from that we are investigating. Most of this work is performed by stamping-machines and dies, where the relief part of the die is station- ary, and the counterpart or intaglio moveable. Some of these operations are closely connected with our art, and for these reasons we will describe a few of them. Impressions of small objects are easily taken : the difficulty in making large im pressions increases rapidly with the size of the impression.
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