Page 147 - Patty Hahne "The Pocket Guide to Prepper Knots"

Possible Uses:
This knot is used for tying a hook or lure onto a fishing line.

Blood Knot
This knot is commonly used by fly fishermen to join fishing
line of various sizes.

Pros: When tied properly, it’s a very sleek knot that passes
easily through the rod guides on a fishing pole. The nice
streamline shape of the blood knot also helps prevent it
from accumulating moss and other debris that may be in
the water.
Cons: This knot can be very tricky to learn and it isn’t a knot
that is quickly tied. It requires quite a bit of dexterity as you
are tying it as well. You may feel like you need a couple of
extra hands to tie this one!

How to tie it:
This is an elegant looking knot but it isn’t easily tied with
rope because it has too much friction to tighten down
properly as described in step 11. In these photographs, blue
paracord will be used to represent the thicker line and red
paracord will be used to represent the thinner line.

1. Hold the working end of the thicker diameter line in your
left hand and the thinner diameter line in your right hand.

Bonus Section: Fishing Knots 141