tfabris carpal tunnel
Registered: 20/12/1999
Posts: 31619
Loc: Seattle, WA
For me, when I have a pair of soldered wires fail, it's not because I didn't create the joint carefully or strongly. It's because the flexing of the unsoldered wire right next to the solid solder joint frays and eventually breaks off.
As was stated elsewhere in the thread, this is somewhat mitigated by a decent bit of shrink-tubing, properly applied.