ABOK 779 - Double Wall Knot
Another attractive two strand knot. Suitable for lanyard, key ring fob or zipper pull
Fold cord in half to form bight. Bring right hand end (A) under two strands.
Bring left hand end under (A), then over two strands and through the bight.
Shift right side of loop (A) over to the left.
Now bring right hand end over to the left.
Then down, going under one strand.
And up through the bight.
Flip the knot over.
Bring strand "B" over to the left, going under one strand.
Then bring same strand up through the double bight,
Grab the opposite ends and pull to tighten.