1. Cross the right-hand cord over the core and the left-hand cord under the core. This creates a loop between each knotting cord and the core. Pass the right-hand knotting cord through the loop on the left from front to back and the left-hand knotting cord through the other loop from back to front (Figure 1, left).
2. Cross the left-hand knotting cord over and the right-hand knotting cord under the core. Pass the cords through the loops (Figure 2, right), and tighten.