Page 75 - Gibson W.B. "The complete guide to knots"

67
Double Chain Twist

Take two bights in a rope, one in
each hand, so that it forms a letter
"M," the end ("A") dangling at the
left, the standing part ("B") at the
right (fig. 1). Then cross the right-
hand bight in front of the left to form
a loop.
This gives you three strands of rope
which may be termed "X," "Y," and
"Z" from left to right (fig. 2). Starting
downward from the crossing, bring
"X" over in front of "Y," "Z" over in
front of "X," "Y" over in front of
"Z," and so on, moving the strands in
left-right, left-right order (fig. 3).
As you do this, keep drawing end
fig. 1
"A" completely through the loop,
otherwise it will become snarled from
the continued twisting. At the bot-
tom, end "A" goes through the loop
automatically (fig. 3). By drawing on
ends "A" and "B" the double chain is
tightened.
Due to the twisting process, the
knots formed in this type of shorten-
ing are sometimes termed "Twist
Knots."

fig. 2