El nudo del pescador
A fisherman's knot is used to semi-permanently join the ends of two ropes together.
Pros: Creates a good strong connection between two ropes of approximately the same diameter.
Cons (...or possibly Pros in this case...:) It will bind (be very difficult to undo), but that is kind of the point, so no worries.
Rope Needed
Two 30′ (~9m) piece of Natural and Blue 6mm
Prerequisites
Steps
Start with the ends of the rope you wish to join
With the first rope, tie a double overhand knot around the other rope, thus…
Continue to wrap the end around the rope
…and tuck it through both wraps
Tighten
Do the same thing with the other end
Pull the two lines together so that the over hand knots meet. Now pull very, very hard to lock down the fisherman’s knot. This will form a very secure join between the two ends of a knot.
This kind of knot, the fisherman’s bend, is subject to binding. Meaning that it will get very difficult to undo. But you typically only use this knot when you’re trying to semi-permanently join the ends of two ropes together so binding is ok. This is great to create the loops I use in the Prusik Anchor and the Redmayne Catch.