Soldering is a process of joining two or more metal pieces together by melting and flowing a filler metal into the joint. It is a common technique used in metalworking, and it is often used to join electrical components and pipes. The filler metal used in soldering has a lower melting point than the metals being joined, allowing it to melt and flow into the joint without damaging the surrounding material. Soldering is a relatively simple process that can be done with minimal equipment and training.