Single-column tie

Safety

At the wrist, Autostraddle's Shibari 101 keeps the knot away from the inner wrist because of the nerves there, and Shibari Safety places wrist rope higher on the forearm, clear of the wrist bones and of the shallow hollow where hand meets wrist, where pressure can cause a so-called handcuff neuropathy.
Placement changes the risk: Shibari Safety calls the upper arm notorious for nerve injuries because the radial nerve there is very sensitive to pressure, and warns that ankle cuffs should not slide up toward the fibula, where the peroneal nerve is exposed.
Autostraddle warns that a wrist cuff whose bight is tied off to a hook or post overhead is still not a way to hold weight: the person tied must carry their own weight rather than hang from the wrists, which could cause serious nerve damage. It also asks that the wraps never twist or lie on top of each other, so that no single spot takes too much pressure.

Role in rope

The tie matters less for what it holds than for what it makes possible. Autostraddle presents single- and double-column ties as the base on which many more elaborate ties are built, and English Wikipedia, citing Harrington’s 2007 bondage manual, treats both as basic forms. Shibari Safety lists the single column among its basic-level skills, applied to wrists, ankles, upper arms and thighs. Crash Restraint’s tie index files a lark’s head single column under basic floorwork, and Rope Bite Pgh’s box-tie class expects students to be very comfortable with single-column ties before they start. Variants differ mainly in the knot that locks the cuff; Crash Restraint’s basic example is built on a lark’s head.

What makes it a cuff

The defining property is that the cuff keeps its size under load. A simple loop that tightens when pulled would squeeze the limb, while a single-column tie is locked so that tension on the rope end does not close it further. Autostraddle’s guide aims for a cuff the wrist can move inside but cannot slide out of.

Before you tie

For a first set to practice with, see the shibari rope buying guide.

Rope: Autostraddle and Voudou Ropes give no length for the single-column tie. Voudou Ropes recommends natural-fibre jute of about 6 to 8 metres and 6 to 8 mm for the double-column tie; that is advice for the double column, not a stated requirement for this tie. Autostraddle starts from the middle of the rope, the bight. Lazarus Redmayne’s lark’s head tutorial on TheDuchy uses one piece of natural hemp about 3 metres (10 feet) long and 6 mm (1/4 inch) thick, also folded in half.

Body areas at risk: Autostraddle places the cuff a short way up the forearm rather than right at the hand, sets the knot on the outer side of the wrist so the more sensitive inner side is spared, and has the person being tied remove any watch or bracelet beforehand. Shibari Safety calls the upper arm notorious for nerve injuries and warns against ankle cuffs sliding toward the fibula (see the safety notes above).

What to check while tying: two fingers should still slide between rope and skin, the wraps should lie flat without twisting or overlapping, and the knot should not tighten when the rope is pulled. These checks alone do not show that the tie is safe. The Bear Essentials adds that circulation and nerve function need checking the whole time; numbness, tingling, or a limb going cold or pale means loosen the tie at once. Keep asking the person you tie about sensation, and look at the colour of the hand or foot.

Keep safety shears within reach. Read safety before you start, and find in-person teaching through the places directory.

Where to see it tied

These are free public tutorials by the teachers named below. Kinbaku World has not tested them. In-person teaching is linked under “Before you tie”.

Ebi McKnotty, Rope365: Day 1: Single Column Tie teaches the Somerville bowline. It has six photos with step captions drawn on them and a 4:31 video with English and French subtitles. English. The article includes a checklist for evaluating the finished cuff and discusses an optional lock.
Lazarus Redmayne, TheDuchy: Lark’s Head Single Column is an English photo-and-text tutorial for a reverse-tension lark’s head. The article includes wrist cautions and a two-finger check.
SomeTies Rope Collective: Single Column Tie (Somerville Bowline) is a 5:26 video in English with spoken explanation (automatic English captions). Its description says the collective runs workshops in Berlin and that the tutorials complement, and do not replace, learning hands-on from experienced teachers. The video teaches the knot in stages, then demonstrates a fluid version and a mirrored version.
Anastasia, Voudou Ropes: Single Column Tie: The Shibari Wrist Knot, Step by Step is a text article with nine steps and two annotated photo sets (steps 1 to 3 and 4 to 6). English. It teaches a square-knot single column, which the page says is the most frequent form in Japan and collapses if pulled hard, practised on one’s own leg; it ends with a two-finger check.

Variations by teacher and school

Autostraddle’s Shibari 101 (cee) ties the cuff from the bight with two wraps above the wrist joint and locks it by passing the bight through loops made with the working ends. The article does not name the knot, and its short animations are the only place the loops are shown.
Knot: Rope365 teaches the Somerville bowline first, tied from the bight alone so the whole rope need not be pulled through, with the bight left free to untie from. It also lists square and granny knots (quick, but a square knot can collapse), a lark’s head followed by reversed tension and a half hitch (solid and without a bight), the reversed French bowline, the East Somerville and the Burlington bowline.
Voudou Ropes teaches a square-knot version, shown on an ankle, with a single wrap; the bight is taken across and around the wraps and then locked through a loop, and the finished knot is meant to look like a small heart. This is a summary of its method, not an instruction.
Lark’s head with reverse tension: Lazarus Redmayne’s tutorial on TheDuchy builds the cuff from a lark’s head and one or two further wraps (4 or 6 strands in all, rarely more because bunched strands press on the inside of the wrist), then locks it with a half hitch that is tightened in three stages. By the tutorial’s own account the full length of the rope end has to pass through two or three times while tying, and the knot only comes apart once that end is free. Redmayne warns that pulling on the tail before the half hitch is seated can deform the knot and let the cuff tighten to an unsafe degree, and that nobody should be suspended by the wrists alone or kept under heavy, lasting strain on tied wrists. It also notes that some tiers add one more reversal before the half hitch. This is a summary, not an instruction.
Number of wraps: Autostraddle wraps twice; Voudou Ropes wraps once. Rope365 says the number of wraps can be varied to spread pressure on the body.
Quick release: Rope365 describes modifying many single-column knots by pulling the bight only halfway through, which makes them quicker to undo but less stable and unable to be locked.
Sliding cuffs: Rope365 also lists pre-tied cuffs (cat’s paw, zip snare) that slide onto the limb and rely on friction, and says to avoid them where structural stability is needed.

How it developed

Rope365 describes the Somerville bowline as a knot that never collapses but can be hard to untie under load, and says that variations emerged to improve on it. Voudou Ropes calls the square knot the most frequently used single-column knot in Japan and notes that it can collapse if pulled hard.

Difficulty and risk

Sources agree that the single-column tie is a beginner’s tie. Its risk depends mostly on where it is placed. Shibari Safety gives different placement advice for each body part, from the muscle of the thigh to the upper arm, which it calls notorious for nerve injuries, and ESINEM Shibari Classes locates the radial and ulnar nerves at the notch between hand and forearm. Kinbaku World therefore lists the risk as moderate rather than low.