Lay out small threads going the same direction in multiples of three to cover the end of your bell-rope. Bind the loose thread ends against the stem of the bell-rope with a constrictor knot.
Weave a group of three small threads through the threads you secured above. Pull the group of threads over three and under three. Continue the pattern until you have weaved the group of three threads through all the perpendicular threads.
Repeat with another group of three small threads. Alternate weaves over and under groups of three threads to create a checkerboard pattern. Continue repeating until you've covered the entire end of your bell-rope.
Tuck each end under the constrictor knot as you finish weaving. Tie down another constrictor knot over the ends of the weave. Adjust the weave so the end knot is perpendicular to itself.