The Alpine Butterfly Knot
The alpine butterfly is mainly used in climbing when one needs to tie into the middle of a rope that may come under tension from either side. In this respect it is better than the figure of eight as strong side forces can deform that knot.
|Ease of Tying||Not too difficult|
|Recognisable||Familiarity is best in this respect. The knot has the appearance of two interlocked overhand knots.|
|Also known as||Lineman's loop|
|Usage||Tying in to the middle of the rope.
Isolating a damaged section of rope.
Once set, will not slip.
Allows three way loading.
Easy to undo.
|Disadvantages||Difficult to tie one-handed.
Requires some training/practice to master