Yanagi-ba (柳刃) Blade Line

Reference sectionYanagi-ba (柳刃)—willow-blade wording

Yanagi-ba combines Japanese wording associated with “willow” and “blade.” A maker may use it for a heel-to-tip line, a broader blade family, or a model option defined within its own catalog.

The name alone does not give a standard curve or tell you how a given pair will cut.

Reference sectionWhat the term establishes

Keep seller summaries and user observations separate from maker wording.

Reference sectionKeep the other geometry fields separate

• Blade line: heel-to-tip path in a declared side or plan view.
• Body cross-section: end-on form of each blade half.
• Edge or grind: the maker-stated working surface, finish, honing, or serration.
• Inner geometry: relief, hollowing, contact lands, pairing, set, and current condition.

Willow wording cannot fill the other three fields.

A tip profile is a further field to record rather than read off the name. Where the model’s drawing shows a tapered point, treat it as tip geometry: fine, well-aligned points are what make point cutting possible, and tip profiles are graded separately, so a sharpener may be able to refine or round a tip within the remaining steel. The word yanagi-ba does not fix how finely the tool enters a section.

Compare contextCompare yanagi-ba with another line

Use compatible evidence:

1. the same declared view and blade orientation;
2. the same heel-to-tip measurement zone;
3. the same model size and handed variant;
4. maker drawings, coordinates, sagitta, or radius with a stated basis;
5. separate section, edge, inner-relief, and partner-blade records; and
6. current sources tied to each exact model.

Exact curve and feel still differ between makers.

One maker’s own line order is the comparison that travels. Joewell publishes a straight, ordinary/willow, bamboo-leaf continuum, with its straighter line holding hair more readily and its bamboo leaf carrying the largest curve; Naruto instead treats yanagiba as its standard line. The cited Japanese trade source describes a standard line and a willow line as differing by degree, with the willow form carrying its curve more consistently from heel to tip and a standard or classic line keeping a gentler, more centralized belly. Read any of that inside one maker’s range rather than across brands, because the same word covers materially different curves and uses from one catalog to the next.

Reference sectionTrial the complete shear

If a maker publishes a technique claim, keep it attached to the exact model and test it only within safe, permitted conditions. Record the tool’s configuration and condition, the task and practice material, and observations such as control, push, fold, drag, effort, noise, and repeatability.

One user’s result does not establish a universal yanagi-ba result.

Service routeService boundary

Yanagi-ba does not prescribe pivot tension, sharpening equipment, abrasive, angle, pass direction, or service interval. Use current model-specific instructions and a provider who can identify and preserve the line, section, edge, inner relief, pairing, and set.

Source trailSources and limits

The sources cited here document how individual makers use willow wording, including one maker’s own line continuum and one dry-cut line with published radii. No source located in this pass publishes a universal willow radius, a class band or a national usage ranking, and the historical naming accounts are maker-controlled rather than independently corroborated. Curve, width, section and stated use therefore stay attached to the exact model and its dated catalog.