 The box is then filled up with a paste of three parts of plaster of Paris, and one of brick-dust, made up with a solution of alum and sal ammoniac. It is also well first to brush the object with this paste to prevent the formation of air bubbles. After...  Smithsonian Miscellaneous Collections - Стр. 157авторы: Smithsonian Institution - 1882Полный просмотр - Подробнее о книге
 | 1881 - Страниц: 1082
...first to brush the object with this paste to prevent the formation of air bubbles. After the mould thus formed has set, the object is removed from the...ashes are removed by pouring mercury into the cold mould and shaking it thoroughly before pouring it out, and repeating this operation several times.... | |
 | 1881 - Страниц: 1090
...first to brush the object with this paste to prevent the formation of air bubbles. After the mould thus formed has set, the object is removed from the...ashes are removed by pouring mercury into the cold mould and shaking it thoroughly before pouring it out, and repeating this operation several times.... | |
 | United States National Museum - 1882 - Страниц: 700
...wooden box by means of pieces of fine wire, so that it is perfectly free, and thicker wires are run from the sides of the box to the object, which subsequently...repeating this operation several times. The thicker wires are then drawn out, and the mold needs simply to be thoroughly heated before it is tilled with... | |
 | Gardner Dexter Hiscox - 1907 - Страниц: 834
...casting. The box is then filled up with a paste with 3 parts of plaster of Paris and 1 of brick dust, made up with a solution of alum and sal ammoniac....interior by first reducing it to ashes. It is, therefore, allowed to dry, very slowly at first, by leaving in the shade at a normal temperature (as in India... | |
 | Gardner Dexter Hiscox - 1914 - Страниц: 818
...casting. The box is then filled up with a paste with 3 parts of plaster of Paris and 1 of brick dust, made up with a solution of alum and sal ammoniac....interior by first reducing it to ashes. It is, therefore, allowed to dry, very slowly at first, by leaving in the shade at a normal temperature (as in India... | |
 | Gardner Dexter Hiscox - 1924 - Страниц: 872
...casting. The box is then filled up with a paste with 3 parts of plaster of Paris and 1 of brick dust, made up with a solution of alum and sal ammoniac....interior by first reducing it to ashes. It is, therefore, allowed to dry, very slowly at first, by leaving in the shade at a normal temperature (as in India... | |
 | United States National Museum - 1882 - Страниц: 708
...toward the bottom, is placed upon the back of the insect to produce a runner for casting. The box IB then filled up with a paste of three parts of plaster...repeating this operation several times. The thicker wires are then drawn out, and the mold needs simply to be thoroughly heated before it is filled with... | |
 | 1883 - Страниц: 520
...first to brush the object with this paste to prevent the formation of air bubbles. After the mould thus formed has set, the object is removed from the...ashes are removed by pouring mercury into the cold mould and shaking it thoroughly before pouring it out, and repeating this operation several times.... | |
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