away from the control assembly thereby placing tension on the leader yarn the number of yarns e g eight that were determined to be needed to form each load bearing core are then tied to each leader yarn when the machine 10 is turned on the leader yarns being in frictional contact with the driver roller 38 begins to rotate within their respective cover channels as the leader yarns rotate they pull a plurality of yarns off of the spools as the yarns are pulled from their spools then through comb 92 and they are drawn eventually through their respective channels in the cover in a circular motion the plurality of individual yarns begin to twist in a regular manner as they are drawn within the channel of the cover thereby forming the endless loop load bearing cores a preferred embodiment is the making of a two path industrial sling the process of making a two path sling using the apparatus that is the subject of this patent application is straight forward once the apparatus has been disclosed in order to streamline the manufacturing process the covers are manufactured in an independent step in this manner hundreds or thousands of covers can be manufactured at a time moreover the covers can be manufactured off site using conventional manufacturing techniques the covers are then shipped to the location where the subject sling making apparatus is located to manufacture the load bearing core and for final assembly of the sling the covers are manufactured with a leader line in each channel therefore if a two core roundsling is to be made the cover is manufactured having two channels and there are two leader lines placed in the cover one.