Japanese Stab Binding: Four-Hole and Noble Patterns

Fukurotoji, a traditional Japanese binding method. The sewing passes through holes along the spine edge. Source: Wikimedia Commons / Hinonbey, public domain

Structural characteristics

In Japanese stab binding, loose sheets or lightly folded gatherings are stacked and clamped together. Holes are punched through the entire stack along the spine margin, typically 5–10mm from the edge. The sewing thread passes in and out of these holes in a specific pattern, securing the pages together. Unlike Coptic binding, the book does not open fully flat — pages fan at an angle from the bound edge.

The technique is particularly well-suited for thinner books, notebooks, and art prints. The visible stitching along the spine functions as a design element: traditional Japanese bookbinders developed numerous patterns, many named after natural forms such as tortoiseshells, hemp leaves, and linked chains.

Traditional fukurotoji used folded pages where the fold faced outward and the open edges were sewn. This protected the text from dust and handling at the open edge. Modern applications often use single sheets or printed paper directly.

Materials

• Text paper or mixed paper stock for pages
• Two cover sheets — same size as the text block, in heavier card or decorative paper
• Linen or silk thread; waxed before use
• Bookbinding needle
• Awl, drill, or punching tool
• Metal ruler and bone folder
• Binder clips or bookbinding press to clamp the block during punching

Hole placement

For a four-hole binding on an A5 or similar format book, the standard placement is:

• Hole 1 and Hole 4: 10mm from the head and tail respectively
• Hole 2: approximately one-third of the book height from Hole 1
• Hole 3: approximately two-thirds of the book height from Hole 1

Mark positions with a pencil on the cover before punching. Punch through all layers at once while the block is clamped, using an awl or a drill press. Clean, vertical holes make sewing considerably easier and produce a tidier result.

Four-hole binding: sewing sequence

1. Cut a length of thread approximately four times the height of the book. Thread the needle and knot one end.
2. Enter Hole 2 from the back cover, pulling through until the knot catches. Bring the thread over the spine edge and re-enter Hole 2 from the back again, looping around the spine edge.
3. Pass the needle to Hole 1. Loop around the head edge (top of the book) and return through Hole 1 from the back.
4. Bring the needle to Hole 2, then Hole 3, then Hole 4. At each odd-numbered hole, wrap around the spine edge before continuing forward.
5. At Hole 4, loop around the tail edge and return through Hole 4. Work back toward Hole 1, entering holes that were skipped on the forward pass.
6. When returning through Hole 2, tie off with two half hitches against the existing thread. Trim the tail to 5mm.

Tortoiseshell pattern (kikko-toji)

The tortoiseshell pattern uses five or seven holes rather than four and produces a hexagonal repeat along the spine. The additional holes are placed at equal intervals between the standard four positions. The sewing path follows a more complex route: after exiting each hole, the thread wraps diagonally to the adjacent hole at a specific angle, creating the characteristic geometric pattern when viewed from the spine edge.

The pattern requires approximately six times the book height in thread. Working slowly with reference to a drawn diagram is helpful the first time through. The result is visually distinct and structurally equivalent to the four-hole method.

Hemp-leaf pattern (asa-no-ha toji)

The hemp-leaf pattern is more elaborate, requiring eight holes and a routing sequence that produces diagonal lines crossing the spine edge in two directions. This creates a six-pointed star or hemp-leaf motif when repeated across the full length of the spine. The pattern is considered a demonstration piece in traditional Japanese bookbinding practice. Several introductory bookbinding books published in Japanese and available through the Nicolai Library (Biblioteka Narodowa) in Warsaw include diagrammed versions of this sequence.

Paper selection

Stab binding works with a range of paper weights. For sketch or writing paper, 80–100gsm is typical. The cover stock should be heavier — 200–300gsm card or pasted Japanese paper over thin board. The binding is not well-suited to very thin paper (under 60gsm), which tends to tear under the thread at the sewing holes over time.