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 . , the methodabout to be described will be found most advan-tageous, for it should be borne in mind that thelump of metal from the previous fusion has to beagain run down in another crucible and pouredinto an ingot mould before the refiner will consentto take his assay from it. In this latter process thewhole work is performed in one fusion, and the ex-pense of a new crucible there
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 . , the methodabout to be described will be found most advan-tageous, for it should be borne in mind that thelump of metal from the previous fusion has to beagain run down in another crucible and pouredinto an ingot mould before the refiner will consentto take his assay from it. In this latter process thewhole work is performed in one fusion, and the ex-pense of a new crucible thereby saved. The fluxemployed in the reduction of the metal is alsoconsiderably reduced. The planis performed after the followingmanner:— Take a plumbago crucible ofthe shape shown in Fig. 22, andcapable of holding the requiredmixture; put the lemel into it,and then place on the top oneounce of finely powdered carbon-ate of soda ; this is all the fluxthe mixture requires, and it isthen quite ready for the the lemel has become properly fused, forfacilitating which it is repeatedly stirred with a thiniron rod, it is withdrawn and poured into an ingotmould prepared for it as previously described. The. Fig. 22. Plumbago Cruci-ble for Lemel. MELTING LEMEL. IO7 flux and other organic matter, which always accu-mulates upon mixtures of this kind, is held back bythe timely application of a thin piece of flat wood tothe mouth of the crucible. After the withdrawal ofthe bar of metal from the ingot mould, it is cooledand weighed, and then it is quite ready for theoperations of the refiner,, CHAPTER XX. On the W^orking of Silver. Having reached a most important and very in-teresting part of our subject, viz. the workingof silver, and being desirous of making this treatiseuseful to the silver-worker in all the branches of hisart, it is our intention to enlarge upon these pro-cesses—which are purely mechanical—and some-what minutely to describe the various manipula-tions and a
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsilverw, bookyear1921
