This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... 69. Walcker recommends the following mixture which has been tried by the author with the results recorded below: -- Ammonium carbonate . . . 300 grains. Copper sulphate . . . . 150 " Vinegar 5i fluid ounces. Evaporate the solution to dryness, and then add-- Vinegar fluid ounces. Oxalic acid 4 grains. ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ... 69. Walcker recommends the following mixture which has been tried by the author with the results recorded below: -- Ammonium carbonate . . . 300 grains. Copper sulphate . . . . 150 " Vinegar 5i fluid ounces. Evaporate the solution to dryness, and then add-- Vinegar fluid ounces. Oxalic acid 4 grains. Ammonium chloride 16, The mixture is boiled and the residue filtered off. The article is warmed and the solution painted on the work. Then boiling water is poured over it, and the surface rubbed, first with an oiled pad, then with a dry pad. (a) Brass ash-tray, oiled and wiped dry, as recommended above. (6) " " dried in sawdust only. (c) Coppered, oiled and wiped dry. (d) " " dried in sawdust only. The above trays were immersed in the filtrate only. It was found that immersion was much better than painting on the solution. The wiping with oil removes some of the bronze colour, unless done very softly indeed. The colour produced on brass is distinctly yellowish-green, while the colour imparted to copper is similar to that produced by copper cloride ( 73), and blackens by exposure to light. (a) darkens slightly in diffused daylight; (b) appears not to change; (c) darkens slowly, probably because the bronze has been largely wiped off by the oiled rag; (d) darkens very quickly in daylight, The residue left on the filter was rubbed into a paste with a few drops of the filtrate, and painted on the work to be bronzed, which was then heated on a lacquering stove. After the paste was thoroughly dried it was washed off with boiling water. Brass received the same colour as by the immersion method, but the colour was not quite so uniform. Copper assumed a deep brown colour, which became darker on exposure to...
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Add this copy of Metal-Colouring and Bronzing to cart. $20.57, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
Add this copy of Metal-Colouring and Bronzing to cart. $26.25, very good condition, Sold by Keeper of the Page rated 4.0 out of 5 stars, ships from Enumclaw, WA, UNITED STATES, published 1892 by Macmillan and Co..
Add this copy of Metal-Colouring and Bronzing to cart. $30.01, new condition, Sold by Ingram Customer Returns Center rated 5.0 out of 5 stars, ships from NV, USA, published 2022 by Legare Street Press.
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Add this copy of Metal-Colouring and Bronzing to cart. $47.02, new condition, Sold by Revaluation Books rated 4.0 out of 5 stars, ships from Exeter, DEVON, UNITED KINGDOM, published 2008 by BiblioBazaar.
