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Flux for Soldering Zinc

Zinc requisite for soldering small articles, such as apt to withdraw the tin from the soldering jewelry, etc., is usually obtained by employ- bolt, zinc and copper having a stronger affining a common blowpipe; as by its use a sud-ity for each other than tin and copper. The den heat may be concentrated on a small proper flux is muriate of zinc, made by dispoint. Where a larger surface has to be solving small bits of zinc or zinc drops in heated, the flame of a spirit lamp is used. muriatic acid mixed with an equal bulk of For brazing, or uniting larger objects with water. hard solder, a furnace, or, if necessary, a forge, may be employed. In working tin plates, Lead. Tin and lead require resin or oil as 3482. Flux for Soldering Tin and the solder is applied and fused by a heated the flux. copper tool called a soldering-iron. The surfaces of parts to be joined by soldering must Pewter requires a flux of oil, and may, in ad-