Aluminium Solder
The following alloys are recommended for the purpose: 1. Melt twenty parts of aluminium in a suitable crucible, and when in fusion add 80 parts zinc. When the mixture is melted, cover the surface with tallow, and maintain in quiet fusion for some time, stirring occasionally with an iron rod; then pour into moulds. 2. Take 15 parts of aluminum and 85 parts zinc, or 12 parts of the former and 88 parts of the latter, or 8 parts of the former and 92 parts of the latter; prepare all of them as specified for No. 1. The flux recommended consists of three parts balsam copaiba, one of Venetian turpentine, and a few drops of lemon juice. The soldering iron is dipped into this mixture.