Brand new cords straight out of the package are quite annoying, because they usually come folded up with a twist tie holding it all together. My setup kind of depends on a straight cord so that the cord isn't as noticeable and doesn't look silly running across the top of a shelf in waves where you can tell the cord was previously bent at.
I've heard that just using your hands to try and bend the cord into a straight position is bad for the cord, and can shorten its life. It's also not always too effective, as some cords made with stronger materials (as with the particular cord I'm trying to straighten) will just curve back where it was bent and not be completely straight.
Is there a simple/effective way to straighten out a long cord without damaging the cord itself?