Thinning Tooth Patterns

Reference sectionQuick reference: the fields that matter

Record these independently for every model:

1. Maker and exact model
2. Tooth count, including whether the number is total, per blade, or split into zones
3. Tooth profile and spacing, including grooves or compound heads
4. Comb arrangement: one toothed blade, both blades toothed, or another layout
5. Orientation: standard, reverse, or maker-approved reversible use
6. Published cut rate: the maker’s approximate value or range, kept model-specific

A retail label such as “blender,” “texturizer,” or “chunker” is useful for discovery, but it cannot fill a missing construction field or cut rate.

Reference sectionWhy count is not a result category

Official catalogues publish different rates at the same nominal count. Joewell, for example, lists 30-tooth models at approximately 15%, 20%, and 30% depending on the tooth system. Other families show that a higher count can accompany a higher published rate. Those figures are maker estimates rather than harmonized laboratory results, but they demonstrate why a 10–16/20–30/30–40 ladder cannot be applied across products.

Within one controlled model family, count may correlate with a different result. Keep that relationship inside the family; do not export it to another maker or geometry.

Reference sectionTooth-pattern vocabulary

• V-groove: A notched tooth-head description used by multiple makers; exact groove shape and result remain model-specific.
• Flat or grooveless: A maker-described flat tooth head without the familiar V channel; it does not guarantee one cut rate.
• Stepped: A tooth with a maker-defined ledge or staged contact surface.
• Curved or arc face: A tooth face described by a curve or radius; verify the actual drawing and model instructions.
• Mixed, zoned, or compound: More than one spacing, profile, or removal zone on the same tool. Record each zone separately.
• Proprietary names: Terms such as double-V, triple-V, L-shaped, or “teeth within teeth” need a maker diagram; the name alone is not a standardized geometry.

Reference sectionJapanese terms (quick map)

• セニングシザー (thinning shears), テキスチャライジングシザー (texturizing shears)
• 目数 (めすう, tooth count), すき率/カット率 (cut ratio)
• 溝形状 (groove): V溝 (V‑groove), U溝 (U‑groove), 曲面/半径 (curved/arc)
• 櫛構成: 片櫛 (single‑tooth) / 両櫛 (double‑tooth)
• 仕上がり: 目立ちにくい (reduced marks), なじみ (blend), 食い付き (bite/grip)

Reference sectionPractical guidelines

• Start with the exact model page, not a count-based shopping filter.
• Preserve a missing rate as unknown; never infer it from count or category name.
• Confirm whether the maker’s rate applies in standard orientation, reverse orientation, or both.
• Compare the tool on a practice head or inconspicuous strand using the section and placement taught for that model.
• Assess actual density, fibre diameter and condition, grouping, perimeter, and desired finish. Hair-type labels do not create a fixed count or orientation rule.
• Follow the maker’s cleaning, tension, and service instructions; tooth geometry can be damaged by unsuitable sharpening.

See also: Tooth Tip Profiles

Source trailSources

• Wolff Industries: What Are Thinning Shears and When to Use Them — https://wolffindustries.com/blogs/technical-blog/choosing-the-right-scissors-for-barbers-and-stylists-buying-guide
• Jatai: Thinning Shears vs Texturizing Shears — https://jatai.net/
• Sam Villa: Haircutting Thinning Shears Guide — https://www.samvilla.com/blogs/hair-tutorials/texturizing-thinning-or-blending-shear-which-to-use
• Mizutani: What Is Texturizing Shears? — https://mizutaniscissors.ca/

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