Sliding knots, or slip knots, are good to use with homemade necklace and bracelet designs because they give the piece flexibility. You don't have to add a closure, just a sliding knot, to open and close the piece. It can also be adjusted while you are wearing it to make it shorter or longer. The sliding knot is a good technique to know when you are doing satin cording or leather work.
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Loop your cord in a circle. Grab the left cord, Cord A, about 5 inches from the end and bend it backward so that it folds back on itself. At the top of your circle, you should see three cords; the cord on the left (Cord A), the cord on the right (Cord B) and the cord that was folded back (Cord C).
Wrap Cord C around Cord A and Cord B four times from front to back and right to left.
Pass Cord C through the wrapping from left to right. It should be sticking out on the right side of the wrapping. Pull both ends to tighten.
Turn the whole piece over. Repeat the wrapping procedure on the other side.
Trim the ends of the cords about 1/2 inch from the knot.