How to Tie the Blood Knot

 

Usage

The Blood Knot is primarily used to join two fishing lines of similar diameter, particularly for connecting monofilament or fluorocarbon lines. Its sleek and streamlined design makes it ideal for smooth casting and retrieval, offering a reliable and low-profile connection.

Why Learn the Blood Knot?

The Blood Knot’s symmetrical design ensures strong, unobtrusive line connections, making it a top choice for anglers and those needing precise joins in utility tasks. Its features include a sleek profile, high strength, versatility, and low visibility.

Common Uses

• Fishing:
  • Joins fishing lines for extended length or leader attachment.
  • Connects monofilament or fluorocarbon lines for seamless casting.
• Utility:
  • Ties thin cords or ropes for light bundling tasks.
  • Joins lines for temporary setups in outdoor or workshop settings.

 

ABOK Number  (Ashley Book of Knots)  1452   Other Names Barrel Knot   Category Bends

 

Notable Features

• Sleek Profile: Minimizes drag for smooth casting in fishing.
• High Strength: Securely joins lines of similar diameter.
• Versatile Use: Suits fishing and light utility line-joining tasks.
• Symmetrical Hold: Balances tension for reliable performance.
• Low Visibility: Creates a discreet join, ideal for clear waters.

Variations

(No true variations mentioned; section left blank.)

Similar Knots

Double Surgeon’s Knot vs. Blood Knot

• Pros: Easier and faster to tie, forgiving with mismatched diameters.
• Cons: Bulkier and less streamlined, creating more drag in fishing.

Double Fisherman’s Bend vs. Blood Knot

• Pros: Extremely secure for permanent joins, suitable for heavier lines.
• Cons: Harder to tie and untie, less sleek for fishing applications.

History

The Blood Knot, referenced in The Ashley Book of Knots (#1452), likely originated in angling communities where a low-profile knot was needed for joining fishing lines without impeding casting. Its name may derive from its early use in fly fishing or its resemblance to blood vessels when tied tightly. Its sleek design and strength have made it a staple in modern fishing, with occasional use in utility tasks for thin lines.

Security Level

The Blood Knot is highly reliable for joining fishing lines of similar diameter, offering excellent strength and a streamlined profile when tied correctly. It holds well under moderate tension but may slip with significantly mismatched lines or improper tightening. For critical applications, ensure even wraps and test the knot under light tension before use.

Downsides

• Tying complexity: Requires precision and practice for neat, secure wraps.
• Line specificity: Less effective with lines of different diameters or materials.

Structure

1. Overlap the ends of the two lines by several inches, aligning them parallel.
2. Take one working end and wrap it around the other line 4-5 times, moving toward the overlap’s center.
3. Pass the working end through the central overlap, exiting toward the opposite side.
4. Repeat with the other working end, wrapping it 4-5 times in the opposite direction and passing it through the central overlap, exiting in the opposite direction of the first end.
5. Wet the knot, pull both standing parts to tighten, and trim the tag ends close for a neat finish.

Pro Tip: Wet the knot before tightening to reduce friction and ensure a smooth join.

FAQ

Is the Blood Knot strong enough for heavy fishing lines?

Yes, for moderate loads with similar-diameter lines, but test thoroughly for heavier applications.

What lines work best for the Blood Knot?

Monofilament or fluorocarbon fishing lines of similar diameter ensure strength and sleekness.

How does the Blood Knot compare to the Double Surgeon’s Knot?

It’s sleeker and better for casting but harder to tie and less forgiving with line mismatches.

Can the Blood Knot be used for utility tasks?

Yes, for joining thin cords, but it’s optimized for fishing lines.

Why choose the Blood Knot over the Double Fisherman’s Bend?

It’s sleeker and easier to tie for fishing, though less secure for permanent joins.

Important Notes on Safety

Common failure points include uneven wraps or insufficient tightening, which can cause slipping. Always verify the knot is used for appropriate tasks and correctly tied. Inspect lines for wear or damage before tying. Wet the knot before tightening to reduce friction and ensure a secure fit. Practice tying in low-risk settings to ensure proficiency.