Uses:
This is a variation of the Square Knot in which
an extra turn is taken at the start to help prevent the knot from
tending to loosen while being completed. Used by surgeons for tying
a ligature and to tie two ropes (can be of different sizes)
together.
Instructions:1) Start with a standard square
knot (tie a left-handed overhand knot and then a right-handed
overhand knot or vice versa). 2) Then add two extra
loops around the second side. 3) Pull the knot tight.