After we debuted our new Cord Zipper Pull options, some of you asked for a written tutorial on how to achieve the Robust Knot seen in our how-to video. Here you go!
The Robust Knot is a simple knot that can be customized to the desired length of the loop as well as the pull itself.
As seen in the video below, fold the line in half with the bottom facing yourself. Keep in mind that the knot builds downward, so make the loop longer than you will want it when finished. We recommend starting with about 2"-2 1/2", depending on the desired loop and knot size. Loop the right arm across the front so that it is perpendicular to the original large loop, forming a horizontal line. Take the left arm down over that horizontal line, around the back of the original large loop, and back through the loop created by your first fold. Pull tight but do not cinch, as this will pull the slack out of your large loop. Repeat the above process from the left side. Now cinch all ends, including the large loop, as tightly as possible. This can be repeated as many times as needed for the desired length of the knotted pull, simply alternate the side that is pulled down to begin the process.
We recommend that you repeat the process at least three times. This will leave a knot roughly 1/2". When the knot is cinched tight, clip the remaining string ends as close to the body of the knot as possible and lightly burn the ends with a lighter, using care not to melt the body of the knot. Loop through the end of your metal zipper pull and enjoy!