. Silverwork and jewelery; a text-book for students and workers in metal, by H. Wilson. 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 the crucible carefully in the cokeon the furnace, and put more coke round. 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.
. Silverwork and jewelery; a text-book for students and workers in metal, by H. Wilson. 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 the crucible carefully in the cokeon the furnace, and put more coke round. 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 Silverbrass will be oxidized, and the subsequent Solderfusibility of the solder impaired. Have ready an ingot mold (fig. 37)well greased; pour the fluid metal intothe mold, and leave to cool. Whencool you can roll it through the metalrollers down to size 6 metal gage, orthinner if you want it for very smallwork. If fine brass can not be obtained, finespelter or good pins will do equally well. A very hard solder for use in enamelingis made as follows: oz. dwt, silver . i o o Alloy copper .050 I 5 o For a large piece of work requiringmany solderings the successive solderingsmay be safely done by using a more fusiblesolder for each operation. The range of solder may be as fol-lows : No. I.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsilverw, bookyear1903
