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Brass Solder for Brazing Iron als

The aluminum solder is spread without or Steel. Thin plates of brass are to be delay on the previously heated surfaces to be melted between the pieces that are to be join- fastened together. In heating, the blue gas ed. If the work be very fine-as when two leaves of a broken saw are to be brazed together-cover it with pulverized borax, dissolved in water, that it may incorporate with some brass powder which is added to it; the piece must be then exposed to the fire with out touching the coals, and heated till the brass is seen to run. 3513. To Solder Ferrules for Tool Handles, &c. Take the ferrule, lap round the jointing a small piece of brass wire, then just wet the ferrule, scatter ground borax on the joining, put it on the end of a wire, and hold it in the fire till the brass fuses. It will fill up the joining, and form a perfect solder.

It may afterwards be turned in the lathe. 3514. To Tin Iron for Soldering, &c.

Drop zinc shavings into muriatic (hydrochloric) acid, until it will dissolve no more;