Geeze Jim. Ya lost me and I've been maken flemish strings for 10 years:) Never had a failure.
I use 2 bundles of B-50, 6 to 7 or 8 strands per bundle, depending on the bow weight. Lay them out on my string jig, take them off and hold the ends of both bundles even in my left hand. Measure up 8 inches from the ends and start to twist. I twist the 1 bundle away from me, then pull it back and left over the other bundle towards me. Then keep doing the same till I have about 1.5 or so twisted string. Then I form the loop by bending that together and continue on twisting and pulling towards me till I run out of the tag ends. I'll twist another 10 or 12 times, them clamp that end and do the same to the other end of the bundles. I do the same to each end, then twist counter clockwise and my string just twists up and shortens to what I need. Geeze it is hard to describe how we make a string.