The first knot as the name implies is a basic figure eight knot.
Strongest knot for joining two ropes.
Bends are knots to tie two ropes together.
The two others add to the original configuration and expand the uses of the knot.
Then thread the tail of the thinner rope through the loop.
A straight rope has a breaking strength.
Best depends on what your objectives are.
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.
The sheet bend is similar to the square knot it s great for joining two ropes.
Use a double fisherman knot to join ropes of unequal diameter for multi abseil descents.
For joining two lines together it would be best to use a flat seizing knot.
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.
Do you want a knot that you will be able to untie after you have put a big load on the ropes.
If you re joining two ropes of different diameters the sheet bend knot is going to work much better than the square knot would.
Do you want an extremely secure knot won t slip or come untied.
The double fisherman s it a much better choice for joining two ropes.
Then use a double fisherman s.
I would agree the figure 8 is certainly the most common and very strong for equally sized ropes in identical materials.
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.
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.
Take the thicker of the ropes and create a loop.
This is one of the strongest knots you can tie and it maintains up to 85 percent of the rope s strength.
This means that the rope is unlikely to break while you re using it.