Electro-Typing: A Practical Manual ...C. Lockwood and Company, 1881 - 226 pages |
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Page 1
... plaster bust , or a bird , or a fish , forms an accurate metallic reproduction of the original , rigid , and indeed everlasting . In some important respects the products of this fascinating and beautiful art resemble the results of ...
... plaster bust , or a bird , or a fish , forms an accurate metallic reproduction of the original , rigid , and indeed everlasting . In some important respects the products of this fascinating and beautiful art resemble the results of ...
Page 145
... Plaster of Paris . - This well - known material is adopted for most purposes where the finest lines are not required ... plaster may be worthless , and may fail to set . When all the water of crystallization is driven off the residue is ...
... Plaster of Paris . - This well - known material is adopted for most purposes where the finest lines are not required ... plaster may be worthless , and may fail to set . When all the water of crystallization is driven off the residue is ...
Page 155
... . Moulds for the deposition of relievo electrotypes of coins and medallions are made from fusible alloy , wax compound ( p . 142 ) , gutta - percha , plaster of Paris , and other materials mentioned and de- scribed MEDALLION TRAYS . 155.
... . Moulds for the deposition of relievo electrotypes of coins and medallions are made from fusible alloy , wax compound ( p . 142 ) , gutta - percha , plaster of Paris , and other materials mentioned and de- scribed MEDALLION TRAYS . 155.
Page 158
... Plaster of Paris may be employed , but the steel engraving moulding material , mentioned at p . 143 , is best adapted for the purpose , and gives least subsequent trouble . The surface of the medal may either be very lightly oiled , or ...
... Plaster of Paris may be employed , but the steel engraving moulding material , mentioned at p . 143 , is best adapted for the purpose , and gives least subsequent trouble . The surface of the medal may either be very lightly oiled , or ...
Page 162
... plaster of Paris must be employed to raise the lower levels . Low spaces , when the matter is moulded , cause long ... plaster , in a thin paste , on the face and rub in by hand ; just before the plaster sets apply a rather stiff brush ...
... plaster of Paris must be employed to raise the lower levels . Low spaces , when the matter is moulded , cause long ... plaster , in a thin paste , on the face and rub in by hand ; just before the plaster sets apply a rather stiff brush ...
Other editions - View all
Electro-Typing; a Practical Manual: Forming a New and Systematic Guide... John W. Urquhart No preview available - 2013 |
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adapted alloy anode applied Architect ARCHITECTURE arranged Author backing metal battery blackleaded brush Bunsen cells carbon carefully cathode Chapter circuit cloth boards coating colour composition conducting conductors connected Construction contains copper copper plate Crown 8vo cylinder D. K. CLARK Daniell cell depositing vessel dissolved dynamo-electric machine edges electro-motive force electrotype employed Engineer Engravings Enlarged face Farm flat Formulæ Fournal Fourth Edition fusible alloy galvanometer gutta-percha half-bound HANDBOOK heat HENRY LAW inches iron liquid LUDGATE HILL Manual Mechanic method Mining negative nickel nitric acid numerous Illustrations obtained operation placed plaster plumbago pole porous cell Practical Treatise printing Railway RALPH TATE render Revised rods Science SCOTT BURN Second Edition shell silver Smee soldered solution Steam strongly bound student sulphate sulphuric acid surface Surveyor Tables text-book thickness Third Edition Timber tion tray usually valuable volume wire wood Woodcuts zinc zinc plate
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