The Blood Knot is a favorite knot for fly fisherman. It is primarily used to join two lines of similar size, e.g., when joining sections of leader or tippet, and is one of the best knots for this purpose. The strength of the knot is increased by making at least 5 and up to 7 wraps on each side of the knot. It works best with lines of approximately equal diameter. Learn how to tie the Blood Knot following the 10 steps below.
Step 1: Move the upper line down over the lower line to overlap the two lines to being joined.
Step 2: Wrap the tag end of the upper line around the standing part of the lower line.
Step 3: Continue to wrap the upper line around the other line.
Step 4: Wrap the upper line around the other line about six times.
Step 5: Tuck the tag end back between the two line.
Step 6: Repeat the process with the other line. Wrap the lower line around the upper line in the opposite direction.
Step 7: Continue to wrap the line around about six times.
Step 8: Tuck the end back in the opposite direction between the two lines.
Step 9: Tighten the lines.
Step 10: Trim the tag end of the lines.
