Tekhelet Tying Diagram Series: The Vilna Gaon (Gra) by Mois Navon Ptil Tekhelet Organization

Notes:

1) A “Single Knot” is made by taking the four strands from one side of the garment and the opposing four strands from the other side of the garment and tying a simple knot.

2) A white “Chulya” is made by taking one white strand from the total of eight strands and wrapping it around the remaining seven strands three times. This “wrapping” strand is designated “Shamash” and is used for all subsequent white chulyot (though it is not halachically imperative that the same Shamash be used).

3) A blue “Chulya” is made the same as a white one, but just using a blue strand.