The silversmith's handbook : containing full instructions for the alloying and working of silver, including the different modes of refining and melting the metal; its solders; the preparation of imitation . ervice to those for whom this manual iswritten. After either of the processes of whiten-ing or plating, the work has to be scratched,unless required to be left a dead white, then thisprocess does not take place ; the scratching re-moves from the surface the dull white colourproduced by the above processes, and effects acharacteristic bright and uniform colour to thework of the sil
The silversmith's handbook : containing full instructions for the alloying and working of silver, including the different modes of refining and melting the metal; its solders; the preparation of imitation . ervice to those for whom this manual iswritten. After either of the processes of whiten-ing or plating, the work has to be scratched,unless required to be left a dead white, then thisprocess does not take place ; the scratching re-moves from the surface the dull white colourproduced by the above processes, and effects acharacteristic bright and uniform colour to thework of the silversmith. Scratching is done atthe lathe (Fig. 40) by the application of a very finebrass-wire brush of circular formrunning upon the spindle; asolution of weak ale runs froma barrel with a tap to it, placedupon the framework of the latheso as to enable the beer runningfrom it to fall upon the brushduring the whole time of itsrotary action, and this assiststhe brush the more easily toglide over the surface of thework submitted to it. A largequantity of silversmiths workreceives no other treatment than this, after thewhitening processes have taken place. Silverchains are burnished by means, of a polished steel. Fig. 40. Scratch-brushLathe. 162 ENRICHING THE SURFACES OF SILVER. jack chain, and the application of a little soft soapand hot water, or otherwise scratch-brushed. Thebeautiful frosted surfaces to be seen upon silverlockets, and other work of a similar nature, are allproduced by means of the scratch-brush. Burnishing is another mode of finishing silverwork. It produces a polished surface, whichreflects like a mirror, and gives the greatestlustre: it removes marks left by the polishingmixtures, and produces a darker surface than theother modes of finishing. The tools employed forthis process are extremely variable, and welladapted to the different kinds of work to whichthey are applied ; they are of two kinds, one beingformed of hard stone, and the other of polishedharden
Size: 1160px × 2154px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubjectsilverw, bookyear1921
