The Principles and Practice of Dipping, Burnishing, Lacquering and Bronzing Brass Ware

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General Books LLC, 2009 - 78 pages
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1900 Excerpt: ... CHAPTER IV Bronzing THE work having been thoroughly cleansed by being boiled off and dipped, it must be thoroughly dried, when it is ready for bronzing. If the work has been already bronzed, is unscratched and perfectly clean, it can be re-brushed up and bronzed again without being boiled and dipped; but if at all dirty, it must be treated as directed before being bronzed. BLACK BRONZING This description of bronzing is especially suitable for all kinds of cast work, but is not so well adapted for sheet or tube articles, as the seam in the latter is apt to show up a bright red; but for this a bronze can be purchased, to which I shall refer later. The work having been cleaned, and dried in the ordinary way in the sawdust, procure equal quantities of "pickle" of old acid and water, to which add salt in the proportion of one pound Principles and Practice of Dipping, etc. to a gallon of the liquid. This must not be too strong. Boil the whole up together, and then allow to get quite cold. Next immerse the metal which it is desired to bronze in the solution, and there let it remain till it becomes black, which will usually not take longer than half an hour--generally less. Then take it out, rinse in cold water, and partially--not wholly--dry in sawdust, being careful to have a separate box of mahogany sawdust from that in which the ordinary brass work for lacquering is dried for the bronze work. The metal now being in a semi-wet condition, smother it all over thoroughly with dry powdered black lead, which done, proceed to polish up quickly with a medium brush. It is now ready for lacquering, care being taken not to burn the bronzing in any way. To keep the work black, a colourless lacquer must be used. If it is desired to have the bronzing a dark green, as is ofte...

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