Page 173 - Barbara Merry - The Splicing Handbook

overhand-knot fashion, as shown here with the left hand, wrapping all the way

down to the bottom of the loop (photo on right). (Molly Mulhern)
At the apex of the loop, pass the free end of one bundle through the loop like
you would if you were tying an overhand knot. Repeating this maneuver again
and again, spiral or grapevine both bundles down the two sides of the splice until
they meet at the throat.