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You'll also need some masking or duct tape, some yarn, two large beads (or anything nickel-sized and round), and a hot glue gun.
To prep your rods extend them to the height you need (all the same), run a bead of hot glue on the seam where the two sections of rod meet. While it's hot slide the two sections together slightly so that the glue gets pulled into the seam. Let it cool and the rod should stay stuck at that height.
2) Tie a very long piece of yarn around the tape and start wrapping it around tightly.
3) Keep wrapping long pieces of yarn around the taped bits.
4) Completely cover the tape. Remember to keep the yarn tight as this is actually what hold the rods together in the long run. The tape is just a temporary helper.