you wish your jump rings to be.
it is simple, hey i can do it so you can do it. a recent acquaintance introduced me to this technique and i thought it worth sharing.
unwind the beginning end of your wire. i snip off the end that was wrapped around at the beginning. then simply wrap it around you round object (in this case the knitting needle), push the ends wrapped around the needle together until it looks like a spring. take your wire cutters and just cut along one "side" of the knitting needle. it is as simple as that.
now you can have 150 to 200 jump rings for minimal cost, 