What is langford double knot?

The Langford Double Knot is a method for constructing a strong, secure knot that can be used on anything from rope to shoelaces. It's especially useful when you need a knot that won't slip, even when it's under a lot of tension.

Here are the steps on how to tie the Langford Double Knot:

1. Begin with a simple overhand knot. Wrap the rope around your hand and pass the end of the rope through the loop on your hand twice.

2. Continue the overhand knot by passing the end of the rope through the loop again. This time, however, instead of pulling it tight, hold the end of the rope in one hand and the loop in your other hand.

3. Take the end of the rope and pass it through the loop opposite the one you are holding. This should form a small double knot.

4. Holding both loops in one hand, hold the top of the double knot in your other hand. Pull the top of the knot to tighten it.

5. Continue to pull the top of the knot until the ends of the rope are parallel.

6. Finally, secure the Langford Double Knot by wrapping the end of the rope around both strands of rope three times. This will help to prevent the knot from slipping.