File:Modern electro plating. The principles involved in depositing gold, silver, nickel, copper, brass and other metals, by means of batteries or dynamos; the preparation and management of plating baths, (14596451309).jpg

Identifier: modernelectropla00vanh (find matches)
Title: Modern electro plating. The principles involved in depositing gold, silver, nickel, copper, brass and other metals, by means of batteries or dynamos; the preparation and management of plating baths, chemicals used, etc
Year: 1897 (1890s)
Authors: Van Horne, James Henry
Subjects: Electroplating
Publisher: Chicago, G.K. Hazlitt & co.
Contributing Library: The Library of Congress
Digitizing Sponsor: Sloan Foundation

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burnishing end close to the littlefinger and the forearm resting on the edge of the bench.Then with a firm, steady pressure, the tool is movedbackward and forward, without taking it from the work.The tool is kept constantly moist by dipping it fre-quently in a bowl of soapsuds standing on the bench andit is kept polished by rubbing the burnishing surface ona piece of leather nailed on the bench and having a littletin putty or Vienna lime and oil on it. A piece of thickwalrus or sea-horse, nailed flat, is generally used andby passing the burnishers over it the narrow way (as ifyou were cutting it with a knife), the tool soon makesitself a track that fits perfectly and thus polishes thewhole surface at once, saving time, as a stroke or twoon the leather covers the entire surface. Differentwidths of tools will of course have separate tracks onthe leather. The tools are of different shapes to suit variousrequirements of the work, Fig. 27, and the first burnish- MODERN ELECTRO PLATING. 177
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Fig. 27.—Shapes of Steel BurnisJiers. 178 MODERN ELECTRO PLATING. ing is done with tools of comparatively sharp edges,while the finishing is done with much rounder ones,although, as the workman acquires skill, he will go overhis work less and use fewer tools, gradually settlingdown to a few forms which he finds best suited to hisrun of work. Brittle deposits must have just sufficient pressure tosmooth the work; coarse and spongy metal needs harderpressure. Caution must be exercised in inspecting thework before beginning to burnish, as unless it is knownto be all right, the metal may be stripped off from faultyplaces in the work by too much pressure, and this ispretty sure to be followed by a quarrel between the bur-nisher and plater. The former maintains that the workwas not properly plated and the plater alleges that itwould have stood all right if the burnisher had notstripped it through carelessness. In any case the workhas to be done over. CHAPTER XIV. SOME FINISHES FOR PLATERS.

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