=Introduction= A soldering iron is a hand tool used in soldering. It supplies heat to melt solder so that it can flow into the joint between two workpieces.
A soldering iron is composed of a heated metal tip and an insulated handle. Heating is often achieved electrically, by passing an electric current (supplied through an electrical cord or battery cables) through a resistive heating element.
=Challenges= <youtube>kmq769_ed9w</youtube>
=Approaches=
=References= * [https://en.wikipedia.org/wiki/Soldering_iron Wikipedia: Soldering iron] * [https://www.printables.com/model/418213-soldering-helping-third-hands Printables.com: Soldering helping hands]