How to Tie the Slipped Constrictor Knot

How to Tie the Slipped Constrictor Knot

Usage

The Slipped Constrictor Knot is a very secure binding knot with the added benefit of a quick release. It can be released by tugging on the working end. You can preview the tying motion in 3D inside the Knot IQ app before you tie it on rope.

Why Learn the Slipped Constrictor Knot?

This knot combines the powerful grip of the traditional Constrictor Knot with the convenience of a quick release, making it versatile for temporary binding tasks.

Common Uses

• Utility and Household Applications:
  • Temporary binding of objects that need secure yet releasable fastening.
  • Securing the necks of bags or bundles.
• Outdoor and Survival Use:
  • Improvised hose clamps or cable ties.
  • Binding the ends of rope during splicing.

ABOK Number (Ashley Book of Knots) ABOK #1250, per The Ashley Book of Knots Other Names Quick Release Constrictor Knot Slipped Binding Knot Type Quick Release Knots Binding Knots Self-Tightening Knots

Notable Features

• Quick Release: Can be untied by pulling the working end.
• Non-Jamming: Less likely to jam compared to a traditional Constrictor Knot.
• Secure Grip: Provides a strong hold when tied correctly.

Variations

Constrictor Knot vs. Slipped Constrictor Knot

See the full Constrictor Knot guide.

• Constrictor Knot: Extremely secure but difficult to untie.
• Slipped Constrictor Knot: Slightly less secure but easily released.

Clove Hitch vs. Slipped Constrictor Knot

See the full Clove Hitch guide.

• Clove Hitch: In the clove hitch comparison, it is easier to tie but less secure. A Clove Hitch crosses only one diagonal pass over two round-turn legs, while the Slipped Constrictor Knot adds a second diagonal riding pass tucked under the first crossing — that extra pass is what gives it the stronger grip.
• Slipped Constrictor Knot: Provides a much firmer grip with a quick-release option.

Similar Knots

Constrictor Knot vs. Slipped Constrictor Knot

• Pros: Extremely secure for permanent binding.
• Cons: Difficult to untie and often needs to be cut.

Clove Hitch vs. Slipped Constrictor Knot

• Pros: Simple to tie and adjust.
• Cons: Less secure for binding purposes.

Miller's Knot vs. Slipped Constrictor Knot

• Pros: Effective for binding sacks and bags.
• Cons: More complex to tie compared to the Slipped Constrictor Knot.

Double Constrictor Knot vs. Slipped Constrictor Knot

For an even more secure, non-slipped option, see the Double Constrictor Knot, which adds a second riding turn for extra grip on slippery cord.

Slipped Clove Hitch vs. Slipped Constrictor Knot

For a quick-release hitch that ties faster but holds less securely, see the Slipped Clove Hitch.

History

The Slipped Constrictor Knot is a slipped variation of the traditional Constrictor Knot, tied so the working end can be pulled free instead of needing to be cut. The base Constrictor Knot has been recommended for uses ranging from household bindings to surgical ligatures, and its effectiveness in binding materials has made the family popular for both everyday and specialized tasks.

Security Level

The Slipped Constrictor Knot is secure for temporary bindings but may slip under extreme loads or when tied with smooth materials.

Downsides

• May Slip: If not properly tightened.
• Less Secure: Than the traditional Constrictor Knot.

Structure

1. Wrap the working end around the object and cross it over the standing line.
2. Make another wrap around the object, bringing the working end to the front.
3. Tuck the working end under the two wraps.
4. Form a bight and pass it under the two parts of the knot.
5. Tighten the knot by pulling on the standing line and the loop created.
6. To release: Tug on the working end to pull the bight through the knot.

FAQ

What is the Slipped Constrictor Knot used for?

It is used for temporary bindings that require a strong hold but easy release.

How does it compare to the Constrictor Knot?

It offers a quick-release feature but is slightly less secure.

Can it be untied easily?

Yes, by pulling on the working end, the knot releases quickly.

Is it suitable for permanent bindings?

No, it is best used for temporary applications.

Important Notes on Safety

The knot needs a rounded (convex) object to bite properly — it works poorly on flat or square-edged surfaces (source). Do not tie it around body parts: the bite that makes it secure on rope or bundles can also pinch or bruise skin. Ensure the knot is tied correctly to avoid slippage, and avoid using it in critical load-bearing situations where maximum security is required.