Silverwork and jewelery; a text-book for students and workers in metal, by H. Wilson (1903)
Wilson, H · New York, D. Appleton and company · leaf 95
Fig. 36. and is moreover cheaper to make thanto buy. 87 SilverSolder For ordinary work take two parts ofsilver cuttings and one part of fine brasscut small, and put them in a small fire-clay crucible (fig. 2^) with a little borax.Place the crucible carefully in the cokeon the furnace, and put more… … Fig. 37. it, leaving an opening in front and onthe top. Then with the gas blowpipeand foot-bellows direct the flame on thecrucible, gradually increasing the force ofthe blast until the metal is fused. Caremust be taken not to give more heat than88 is absolutely necessary, or the zinc in the…
Silverwork · Jewelry
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