Japanese Blade-Line Terms: A Practical Scissor Guide
Learn four Japanese terms used for professional scissor blade lines, how the edge curve differs from the blade cross-section, and what to compare on an exact model.
Japanese scissor catalogues use several terms for the curve of the cutting edge from pivot to tip. Learning the vocabulary makes product descriptions easier to read, but the name is only a starting point: the exact curve, length, grind, tension, and setup determine how a particular pair feels in use.
What is a blade line?
The blade line (刃線, hasen) is the path of the cutting edge when the blade is viewed from above. A straighter line tends to hold a section in place, while a more pronounced curve can allow more movement along the edge as the blades close.
Blade line is different from blade cross-section. A scissor can combine a particular edge curve with a convex, semi-convex, flat, or bevelled cross-section. Product names are not perfectly standardised between makers, so a current diagram or direct maker description is more useful than the term alone.
Four Japanese blade-line terms
Chokuba (直刃) — straight blade
Chokuba describes a relatively straight cutting line. This geometry is commonly considered for work where controlled placement matters, such as blunt lines and compact detail cutting.
- Typical cue: minimal curvature from pivot toward the tip
- Often considered for: blunt cutting, bobs, and other structured lines
- Compare on the model: tip shape, blade width, length, and whether the edge is truly straight or only less curved than another option
Yanagiba (柳刃) — willow blade
Named for a willow-leaf shape, yanagiba usually indicates a gentle, progressive curve. It appears across general salon-cutting ranges because it can balance section control with some movement along the edge.
- Typical cue: moderate, even curvature
- Often considered for: general cutting, layering, point work, and versatile salon use
- Compare on the model: where the curve begins, how pronounced it becomes near the tip, and the maker’s stated techniques
See the willow blade reference for a closer look at the term.
Sasaba (笹刃) — bamboo-leaf blade
Sasaba refers to a fuller bamboo-leaf curve. Makers may use this shape for scissors intended to support slicing, slide cutting, or other work where the section moves along the edge.
- Typical cue: a more pronounced curve through the working portion of the blade
- Often considered for: slide cutting, slicing, and soft texture work
- Compare on the model: blade width, tip control, edge finish, and the exact technique guidance supplied with the pair
See the bamboo-leaf blade reference for related terminology.
Kamaba (鎌刃) — sickle blade
Kamaba describes a sickle-like curve. It is a specialist term, and the exact silhouette can vary substantially by maker and model.
- Typical cue: a strong curve toward the forward part of the blade
- Often considered for: specialised movement and texture techniques
- Compare on the model: the complete blade drawing, intended section size, tip behaviour, and a controlled trial within the seller’s terms
See the sickle blade reference for more detail.
A quick comparison
| Blade-line term | General shape | Commonly considered for |
|---|---|---|
| Chokuba | Relatively straight | Structured lines and controlled placement |
| Yanagiba | Gentle willow curve | Versatile salon cutting and layering |
| Sasaba | Fuller bamboo-leaf curve | Slicing, slide cutting, and soft texture |
| Kamaba | Pronounced sickle-like curve | Specialist movement and texture work |
This table is a vocabulary guide, not a universal technique prescription. Hair, section size, blade length, edge condition, tension, hand position, and the individual model all affect the result.
How to compare current products
Japanese ranges from Yasaka, Ichiro, KASHO, Mina, Joewell, Juntetsu, Mizutani, Hikari, and other makers use their own combinations of blade-line terms, drawings, and technique descriptions. Distributors and specialist retailers in Australia, New Zealand, the United States, Canada, and other markets receive stock from Japan across these ranges, although the exact models available vary by country and seller.
When a blade-line option matters, check:
- the current model name and blade length;
- the maker’s drawing or direct description of the edge curve;
- the blade cross-section and edge finish as separate specifications;
- the techniques named for that exact model;
- handedness, handle geometry, ring fit, and pivot setup;
- trial, return, sharpening, and service support in your market.
A dealer may use English descriptions instead of the Japanese terms. Clear model-specific measurements and guidance are more important than any particular vocabulary.
Blade line and blade profile are separate
The blade line is the edge curve viewed from above. The blade profile or cross-section is viewed through the thickness of the blade and may be described as convex, semi-convex, flat, bevelled, or hamaguri-shaped.
Those two features can be combined in different ways. For example, a gently curved blade line can have a convex or semi-convex cross-section. Compare both fields on the exact product rather than assuming one from the other.
The practical takeaway
Japanese blade-line terms give stylists a useful way to discuss edge curvature. They are most helpful when paired with a current product drawing, a clear technique description, and a trial of the exact size and handle configuration.
Start with the work you want the scissor to perform, then compare the complete model. The name helps you ask a better question; the exact geometry and fit provide the answer.
For related concepts, continue to Blade Line Types, Blade Cross-Section Geometry, and Professional Scissor Anatomy.
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