F. A rope of this material is four times stronger than steel of the same weight. As with most good things it is very expensive. Well, temperature and texture. Many knots described in sailing books and hobby phamplets need an extra hitch or end tie to secure them with nylon. Please be sure to exercise due caution when tying for the first time.
Temperature plays an important part if the artificial rope is subjected to friction.
Try and avoid sawing actions between rope parts or, as the rope tightens up under a load, the binding of one against another. These actions may actually fuse them together. Nylon melts at 482 degrees F. Polyester melts at 500 degrees F. Polypropylene melts at 329 degrees F. Artificial rope is easily found in hardware stores, sporting stores and of course nautical outlets. A knot uniting two ropes reduces the strength of the unit to aboult half that of the weaker rope. A rope that is twice the diameter of another has four times its strength.