Rope length
The standard lengths bondage rope is cut to; conventions include about seven to eight meters in Japanese practice and around 30 feet, with half lengths, in North America.
Practitioners usually tie with a set of ropes cut to a few standard lengths. Epic Rope describes a Japanese convention that sizes a rope at four times the tier’s full arm span, typically about 7 to 8 meters, and says many North American riggers prefer ropes of about 30 feet with 15-foot spares, because the shorter Japanese lengths, designed around slender bodies, often ran out before a tie was finished on larger ones. Shay Tiziano of Twisted Windows likewise counts a basic suspension kit in full lengths of about 30 feet, or 8 to 10 meters, plus half lengths of about 15 feet. Two ropes can also be joined into one longer one, which Andrea Ropes’s glossary calls tsuginawa, a rope extension.