Soldering is a process in which two or more pieces of metal are joined together by melting and flowing a filler metal (solder) into the joint. The filler metal has a lower melting point than the base metal(s), so it can be melted and drawn into the joint by capillary action.
- A soldering iron is the primary tool used to solder. It is an electrical device with a tip that heats up to melting temperature when electrically energised. The tip is usually made of copper or another good heat conductor, and is coated with a non-reactive material such as solder.
- Wire solder is a type of solder that comes in a spool of thin wire. It is used to create electrical or mechanical joints between two pieces of metal. The wire is fed through the joint and melted, filling the joint and creating a strong connection.
- Fluxes are materials that are used to clean the surfaces to be soldered and prevent oxidation of the metals during soldering. They are applied to the joint before soldering.