The key for soldering is speed.
If it takes longer that a second to make the joint, back off and try another technique.
I don't use resistance soldering, so have no idea how that works in real life.
Using a soldering iron, the correct solder is crucial.
Wrong solder:
can take too long to melt.
have acid flux (eats up wires and copper on boards).
not be best conductor.
hard to handle.
Also, more solder is not always better.?
Thomas
DeSoto, TX
