Threadable cord insert to make your own circular knitting cord!

My circular knitting cord wasn't long enough for a project, so I cut a pair of headphones and used them as a cord using this insert. This assumes you have circular knitting needles with a male screw (I know some brands have it the other way around).

I just put superglue on the cord, and then slid the cord into the bottom of this insert. It should thread itself on the needle screw.