A soldering iron is a hand tool used in soldering, a metalworking process that joins two pieces of metal by melting solder onto the joint. The soldering iron heats the solder, which melts and flows into the joint, creating a strong bond between the two pieces of metal.
Soldering irons come in a variety of shapes and sizes, and can be powered by electricity, gas, or even butane. The best soldering iron for a particular job will depend on the size and type of joint being soldered, as well as the skill level of the person doing the soldering.
