What is Solder?
Solder is used by assembly workers in many industries to make electrical connections and to seal copper pipe during plumbing installations. It is typically available in a wire form made from various metals with a core of flux on the inside. Soldering is accomplished by heating the two items to be connected with a soldering iron, and touching the heated points with the solder, which melts, flows, and solidifies to form a permanent connection. Flux helps to prevent oxidation during the soldering process.