Solder practice always in flux

Chicago Sun-Times | April 16, 1989 | Copyright

Soldering is a simple and inexpensive way to join one metal surface to another. It has many applications, among them sheet metal work, electrical wiring and jewelry-making.

You'll need a tool to heat the work, equipment to clean the surfaces to be joined and of course the solder - the "glue" that holds the joint together.

Most solders are mixtures of tin and lead. A solder of 60 percent tin and 40 percent lead makes a strong bond. It's easy to work with but is relatively expensive. A 50-50 solder is cheaper but not so easy to work with.

The other substance used in soldering is flux. ...

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