Shun Dual Core 6.5" Nakiri Knife

Construction and steel

The Dual Core blade uses 71 alternating micro-layers of VG10 and VG2 stainless steel in a coreless construction, meaning both steels extend fully to the cutting edge. This differs from Shun Classic and Premier lines, which use a single VG-MAX core clad in Damascus. Shun states that the differential wear rates of VG10 and VG2 create micro-serrations that maintain cutting performance between sharpenings.

Forum members dispute this claim. One ChefKnivesToGo member argued that wear resistance cannot exceed that of the hardest steel (VG10) alone, and that once the apex of the VG10 edge wears down, the knife will still be dull. Another called Dual Core “gimmick visual eye candy.” Whether the micro-serration effect provides measurable real-world edge retention improvement over monosteel VG10 is not independently verified.

Chipping and durability

A BladeForums member reported that “Shun Classic lines have chipping issues that I don’t see in other VG-10 kitchen knives.” A professional chef stated that “their steel in their VG series was too brittle, chipped frequently.” A knifemaker wrote that Shun knives came in for sharpening with “chipping and a boat load of two very common problems.” It is unclear from forum evidence whether these chipping reports apply specifically to the Dual Core line or are limited to other Shun lines. No widespread structural failure or handle-durability complaints were found for this specific model.

Care and warranty

Shun provides a limited lifetime warranty on the Dual Core Nakiri. Shun also offers a free lifetime sharpening service — owners can send knives back to Kai USA for sharpening. Care guidance from Shun: hand wash with gentle dish soap, dry immediately, store in the provided saya or on a magnetic strip. The Pakkawood handle is water-resistant and durable.

A BladeForums member noted that Shun knives “represent the biggest warranty issue for Kai USA… many home cooks do not know how to properly use thinly ground, hard stainless steel knives and they break them… and Kai takes care of them.” This suggests the warranty is actively used rather than merely theoretical.

Is it worth it?

The value proposition rests on the proprietary 71-layer VG10/VG2 construction, fit and finish consistently rated above competitors, free lifetime sharpening, and limited lifetime warranty. The primary risks are: no independent instrumented testing validates the Dual Core steel’s performance claims over simpler monosteel VG10 competitors that cost significantly less, and recurring forum reports of chipping in Shun VG-series knives. For buyers who value the distinctive aesthetics and are comfortable with Shun’s price premium, the knife delivers solid quality. For budget-focused buyers, Shun’s own Classic Nakiri or competitor offerings from Tojiro may offer comparable real-world performance.

Which model this is

This page covers the Shun Dual Core 6.5" Nakiri, model VG0028, part of the Dual Core collection. The Dual Core collection was expanded in August 2026 to include new shapes (8" Chef’s, 4" Paring, 6.5" Master Utility) and a 5-piece block set. The Nakiri remains part of the original Dual Core lineup. The Amazon US listing is ASIN B07C266TSV. The Dual Core steel was developed with Takefu Special Steel Company; the process was originally pioneered by the Echizen Consortium and knifemaker Saji.

Sources

Manufacturer:

• Dual Core 6.5" Nakiri product page
• Explore Dual Core
• Nakiri collection page
• Shun 2019 Catalog PDF
• Shun Cutlery Expands Dual Core Knife Collection

Independent reviews:

• WIRED: New Kitchen Knives from Shun and Kikuichi Cutlery

Owner reports:

• Shun or Tojiro? (ChefKnivesToGo Forum)
• Shun Dual Core VG10 & VG2 Opinion (ChefKnivesToGo Forum)
• Shun knives… a few random thoughts (BladeForums)