The first knot as the name implies is a basic figure eight knot.
Strongest knot for joining two ropes.
Then thread the tail of the thinner rope through the loop.
Do you want an extremely secure knot won t slip or come untied.
If you are using two ropes as a fixed line first join them with a double fisherman knot and then tie an alpine butterfly knot that incorporates the double fisherman knot in the loop.
Adding tension along the axis will eventually break the rope.
For joining two lines together it would be best to use a flat seizing knot.
This means that the rope is unlikely to break while you re using it.
The two others add to the original configuration and expand the uses of the knot.
Use a double fisherman knot to join ropes of unequal diameter for multi abseil descents.
Then use a double fisherman s.
Tying three of these knots in succession will provide a permanent junction that will hold the lines together and evenly distribute the forces over the length of the seizes providing you.
Here is a selection of knots for joining ropes and also some knots where the rope is tied upon itself such as the heaving line knot and the sheep shank the water knot is an excellent knot for use with flat webbing material.
This is one of the strongest knots you can tie and it maintains up to 85 percent of the rope s strength.
But if you need to join two different materials or different sizes of rope then the sheet bend is your best bet you can use th.
Best depends on what your objectives are.
That gives you three things 1.
Take the thicker of the ropes and create a loop.
This knot is used to bind two lines of similar size together and never let go.
A straight rope has a breaking strength.
Bends are knots to tie two ropes together.
If you re joining two ropes of different diameters the sheet bend knot is going to work much better than the square knot would.
I would agree the figure 8 is certainly the most common and very strong for equally sized ropes in identical materials.