Ladder effect from using double pointed needles
I am knitting socks on double points and I have a "run" between my needles. You can see a line all the way down between each needle.
What am I doing wrong?
I quite often have this issue as well, and other than tightening up last stitch on one needle and the first stitch on the next I have never found a truly satisfactory way of solving it.
It is possible that one of the other visitors to this site might be able to offer a solution.
For me, I decided to switch to using two circular needles rather than four doubled pointed ones. It takes a while to get used to using them but the results are impressive.
I found a really good DVD on Amazon that showed me how to do it. It is called Knitting Korner: Sock I, How to Knit Socks on Two Circular Needles
and I highly recommend it if you want to learn how to use this method.