Every cable is absolutely about how you route it...If you aren't stressing a cable (because it is routed properly,) it can't cause damage to these supposedly weaker soldered joints. Soldering multiple cables together, if done properly, IN NO WAY WEAKENS YOUR CABLES.
This is why those of us who have been doing this for several years make all of our own cables. We understand that in order to route them properly, you have to make them properly.Here
is a post that shows a well soldered dual wire connection...(his soldering isn't that clean, but the process is correct.)Edited by longroadtrip - 6/10/13 at 10:52am