Blood Knot Tool - Cottarelli

Blood Knot Tool - Cottarelli

The Blood Knot Tool Cottarelli is a very handy accessory for tying perfect blood knots every time, quickly and easily.

This tool keeps both strands of nylon perfectly aligned and frees up your hands. It lets you build your own leaders with professional consistency and perfect alignment.

Design & Ergonomics

Machined from steel, brass and aluminium, this high-precision tool works with a wide range of line diameters from 0.10mm to 0.70mm.

Its head tilts to 90°, allowing you to work horizontally or vertically depending on your preference.

Its 9mm diameter mounting stem ensures stable installation on a table clamp or a vise mount. It is also removable for easy transport.

Efficiency & Tip

The system features clamping bushings, and you can adjust the pressure using the brass knurled knobs to suit each line diameter.

For maximum knot strength, make between 4 and 7 wraps depending on the diameter (the thinner the line, the more wraps you should make).

Always moisten the lines (saliva or dry fly floatant) before the final tightening to prevent the nylon from overheating.

Its design helps keep nylon waste to an absolute minimum, so you don't waste your spools.

To see how easy this tool is to use, watch the video demonstration available on this page.

Key Benefits

• Perfect knots: symmetrical and strong.
• Adjustable: adjustable clamping pressure for the right grip (from 10/100 to 70/100).
• Ergonomic: 90° tilting head for comfortable tying.
• Line-saving: reduces waste by minimizing the tag ends to trim.
• Premium quality: rugged construction in machined steel, brass and aluminium.

Specifications

Brand: Cottarelli
Materials: Steel, brass, aluminium and central plastic part
Working range: 0.10 to 0.70mm
Stem diameter: 9mm
Knot type: Blood knot (Blood Knot)
Made in: Italy

In short, this tool turns tying connection knots into a real pleasure. It's a great investment for quickly building leaders you can trust completely, while optimizing your line consumption.

Note: Find the Cottarelli table clamp here, sold separately.