The first video below, from 1977, is aimed at workers on the assembly line and as such concentrates mainly on the practical aspects of making solid solder joints ... use of silver-bearing solders.

As your soldering skills increase, you get the knack of making a good joint. Applying just the right amount of heat and supplying just enough solder becomes second nature, and though you still ...

To test this station, we used silver solder rather than the ... and they’re usually too hot to make connections to a PCB or other electronic joints. Torch soldering uses gas, which can be ...