Items NOT needed:
The first thing I did was to learn to tie a Spanish ring knot, which is the basis for my guitar string ring.
First you will need to secure the starting end of your string to your dowel. You can use tape, rubber bands, or in my case, I used a piece of wire threaded through the little retainer on one end of the string and a hole drilled in my pipe.
Follow the published tutorials until you have reached the first 3 wraps, resulting in a Turk's Head knot. Here is where you need to carefully tighten up your knot. Be very careful not to kink the wire. After the next two times around in the tutorial, your Spanish Ring knot will be complete... sort of. Once you are to this point, You will probably find it much easier to complete the rest by removing the ring from the dowel.
Now simply follow your original path keeping the string side-by-side to make a doubled Spanish Ring Knot.
Clip both ends of your wire inside the ring so they overlap a little. Use a needle and thread to wrap all 3 wires (beginning wire, 2nd wrap, and ending wire) tightly. Use cyanoacrylate glue to secure the thread and let it dry.
Cut your threads close and wear proudly.
I hope you've enjoyed my very first instructable.