The solder has a lower melting temperature than the parts that are being joined. It flows in and around the joint before too much heat is applied to the surrounding components; too much heat will distort and damage the metal work. This technique requires a jig to hold the component parts in the correct position during soldering.
Laser Welding
Laser welding joins component metal parts together using intense light emissions. On contact, the laser instantly melts (or fuses) the contact areas of the components together.
