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Soldering is an inexpensive and rapid means of permanently joining aluminum to aluminum and to other metals. Properly made joints are leakproof and strong. Soldering is used for joining aluminum wires, making heat exchangers, space-ship plumbing and thousands of other applications far too numerous to list here.

Aluminum soldering is relatively simple. Single joints are readily made in the field and shop with low-cost hand tools. Single and multiple joints, often numbering in the thousands, are automatically produced with comparatively low-cost equipment by semi-skilled personnel.