Why does my BiColor rope have fuzzy bumpy yarns at the middle mark?
Those fuzzy bumpy spots are Air Splices. An air splice is the joining of two yarn ends by means of high-pressure air forced around the ends causing them to entwine and snarl together. Air splices are essential to join strands into usable lengths. From a life safety perspective two yarns air spliced together test out to be 50% stronger than continuous straight fibers because they have twice as much yarn in the section that is air spliced.
