A cinch is an extra turn of rope that runs across a bundle of wraps and draws that bundle tight. It holds the turns together, keeps them from sliding, and splits one wide band into two parts. In Japanese it’s called kannuki, literally the bolt of a gate.

To hold the wraps in place. Without a cinch the turns rotate along with the arm or leg and slip away. On a double-column tie the cinch makes two separate openings out of one loop, so the wrists can’t slide toward each other. The price is tension. The band ends up tighter than it was.

How tight can a cinch be?

Two fingers should fit under the rope, and you do that check after you tighten, not before. Nerve damage sets in very fast, it builds up, and it is often permanent. So never lay the cinch where a nerve runs close under the skin, like the inside of the elbow or the outside of the upper arm.

Who can you turn to with questions about the cinch?

Victor, a gigolo with twenty-five years of experience in BDSM and a background as a psychotherapist. He does bondage soft or firm, with real hemp rope. You can ask him anything, no strings attached, through the contact form or free chat first.

Close-up of an open book with a pencil between the pages, in black and white

Glossary

Cinch

One turn of rope that decides whether a band stays put or slips away, and that makes your tie quietly tighter than you expected.

What is a cinch?

A cinch (Japanese: kannuki) is an extra turn of rope that runs across a bundle of wraps and draws that bundle tight. It holds the wraps together, keeps them from sliding, and turns one wide band into two separate parts.

Japanese term	Kannuki, literally the bolt of a gate.
What it is	a turn of rope at a right angle to the wraps
What it does	tightens the wraps, holds them in place, and separates them
Where you see it	the double-column tie, and the arm bundle behind the back
Biggest pitfall	it tightens after the fact, so what looked loose is suddenly snug

What does a cinch do to a bundle of rope?

A wrap is nothing more than rope that goes around a body part. Lay a few of them side by side and you have a band. That band is comfortable as long as the turns stay next to each other, and the trouble is that they won’t do that on their own.

That is where the cinch comes in. The rope studio Anatomie Studio in London describes it in their glossary as a turn that runs between two columns to stop slipping. Wraps, in that same glossary, are simply the turns that go around the body or a column. On a double-column tie you see it right away. The cinch makes two separate openings out of one loop, so the two wrists can’t slide toward each other.

The price is tension. A cinch pulls the wraps toward each other, which means the band ends up tighter than it was when you laid it. Set the wraps at the right tension, run a cinch over them, and afterward you have something snugger than you planned.

What do you watch for when you lay a cinch?

How real that is shows in the study by Khodulev and colleagues in Cureus. Of every nerve injury in their group, 81.3 percent sat in the radial nerve, the one that runs just behind the upper arm, and recovery ranged from two minutes to five months. Their recommendation is the heart of this whole concept. Use techniques that spread the pressure evenly, and keep excessive pressure off specific nerve pathways.

In practice: check for the two fingers after the cinch, not before. And never lay the cinch right where a nerve runs close under the skin, like the inside of the elbow or the outside of the upper arm. The cross turn concentrates the pressure exactly where it sits.

Rope is part of what I do. How I build a tie like this on a BDSM date, and how I check the tension and your fingers after every cinch, we talk through beforehand.

Sources

Acute Radial Compressive Neuropathy: The Most Common Injury Induced by Japanese Rope Bondage. Khodulev, Klimko, Charnenka et al., Cureus 15(5), e39588, 2023. Provides the figure of 81.3 percent of all nerve injuries in the radial nerve, the recovery times of two minutes to five months, and the recommendation to use techniques that spread the pressure evenly.

Bight. The loop in the middle of the rope, where almost every tie begins.
Asanawa. The hemp rope this technique grew out of, and why the material matters.
Single column tie. The tie that does without a cinch, and that for exactly that reason must never draw itself tight.
Friction. The locking turn that holds the rope in place once a cinch is drawn tight, and that does so without a knot.

Frequently asked questions

What people still ask about the cinch.

What is a cinch?
A cinch is an extra turn of rope that runs across a bundle of wraps and draws that bundle tight. It holds the turns together, keeps them from sliding, and splits one wide band into two parts. In Japanese it’s called kannuki, literally the bolt of a gate.
What is a cinch for?
To hold the wraps in place. Without a cinch the turns rotate along with the arm or leg and slip away. On a double-column tie the cinch makes two separate openings out of one loop, so the wrists can’t slide toward each other. The price is tension. The band ends up tighter than it was.
How tight can a cinch be?
Two fingers should fit under the rope, and you do that check after you tighten, not before. Nerve damage sets in very fast, it builds up, and it is often permanent. So never lay the cinch where a nerve runs close under the skin, like the inside of the elbow or the outside of the upper arm.
Who can you turn to with questions about the cinch?
Victor, a gigolo with twenty-five years of experience in BDSM and a background as a psychotherapist. He does bondage soft or firm, with real hemp rope. You can ask him anything, no strings attached, through the contact form or free chat first.

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