Technical requirements for Yarns as discovered from the study of the knots themselves. Each of the following will be studied for each type of knotting technique. See attached not descriptions. Each of the following will be discussed relative to the intended finished product. Having two or more contrasting colors of cords that coordinate with the woven, crocheted or knitted garment is an excellent way to show off the garment and knots.
Most knots show the best definition with a round cord.
But under the right conditions, even a single can be used. Note the cotton single sample C2. Two plies with good twist are sufficient in fine yarns. The heavier the cord, the better to use multi-plies. Multi-plies do not abrade as readily as singles.