ROCKSTEAD SHU CB-ZDP (KIKU)

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$1,830 USD*

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The Rockstead SHU CB-ZDP KIKU is a premium folding knife that combines traditional Japanese design sensibilities with highly controlled modern semi-custom manufacturing. Developed as a refined gentleman’s everyday carry folder, the SHU balances compact proportions, clean structural lines, and high-performance blade construction within a distinctly restrained design language.

The Aesthetics of Restraint and Character
Traditional Japanese sword mountings often pursued a balance between visual presence and long-term subtlety. Craftsmen designed details to reveal themselves gradually through handling and close observation rather than relying on excessive ornamentation.
The SHU CB-ZDP KIKU follows this philosophy through its restrained surface treatment and thoughtful material selection. The titanium handle features a durable DLC coating engraved with a traditional chrysanthemum (Kiku) motif.

In Japanese culture, the chrysanthemum — Kiku (菊) — has long been associated with dignity, longevity, refinement, and formal elegance. Historically connected to the Japanese Imperial family, the chrysanthemum crest became a symbol of authority, discipline, and enduring tradition.
Within the SHU’s design, the engraved Kiku motif introduces a restrained ornamental element into the knife’s otherwise highly controlled mechanical architecture. Over time, subtle shifts in the interaction among light, texture, and the engraved surface allow the handle to develop a more individual character through regular handling and carry. The contrast between the dark engraved titanium body and the mirror-polished blade creates a mature appearance that evolves naturally through long-term use rather than through decorative excess.

Precision Button Lock Integration
The manual Button Lock mechanism is built with extremely tight tolerances, combining operational safety with a clean and intentional mechanical layout.
During both opening and closing, the user’s fingers remain clear of the blade path. The locking interface provides secure engagement, smooth and consistent action with minimal play, and a dense, refined mechanical click with a distinctly solid and confidence-inspiring character.

Advanced Blade Construction: ZDP-189 & Honzukuri Geometry
At the center of the SHU’s cutting performance is a blade made from ZDP-189 powder-metallurgy steel, hardened to approximately 67 HRC.
The Rockstead Honzukuri blade profile is a precision-engineered interpretation of traditional hamaguri-ba convex geometry. This continuous convex structure allows the blade face to transition smoothly toward the cutting apex while preserving greater material support behind the edge.
In high-hardness blade construction, this geometry becomes particularly important, as cutting efficiency and edge stability must remain carefully balanced within an extremely hard-edge structure.
Rather than applying a universal convex template across different models, Rockstead develops the Honzukuri curvature individually for each knife design according to intended cutting application, blade dimensions, thickness distribution, and steel characteristics.

Precision Mirror Finish
Each blade undergoes extensive hand-finishing to achieve Rockstead’s signature mirror polish. The precision of the grinding and subsequent mirror-finish polishing is so high that reflected lines remain visually undistorted across the blade surface, directly revealing the consistency and symmetry of the underlying convex geometry.

* The name “SHU” (秀) can be translated from Japanese as “brilliance” or “refined excellence,” reflecting the knife’s balance of precision engineering, restrained aesthetics, and highly controlled craftsmanship.

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Rockstead Shop

ROCKSTEAD SHU CB-ZDP (KIKU)

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