The 147 features a unique convex grind (hamaguri-ba), borrowed directly from Japanese katana polishing. Unlike Western scissors that use a simple bevel, the convex edge glides through materials without crushing or fraying. The blades are asymmetrically balanced: the right blade is 0.2mm thicker than the left, allowing for a "micro-vibration" damping effect.
First, let us clarify the terminology. "Utsunomiya" refers to the city in Tochigi Prefecture, Japan, a region historically famous for two things: gyoza (dumplings) and high-precision metalworking. "Shion" (紫音) translates roughly to "purple sound" or "violet tone," a poetic name given to a specific line of premium tools. The number 147 refers to the model designation—most commonly associated with a specialized shear or scissor, though enthusiasts have applied the term to a family of tools sharing the same ergonomic and metallurgical DNA.
The Utsunomiya Shion 147 is widely recognized as a pair of heavy-duty, multi-purpose shears designed for professional use. Unlike mass-produced scissors from Western brands, the Shion 147 is forged using a proprietary blend of Japanese Hagane (high-carbon steel) layered with a softer stainless cladding. This creates a blade that holds a razor edge yet resists chipping—a holy grail in cutting tools.
This is where the "Shion" name truly shines. The 147 is the preferred shear for shito (small) bonsai trimming. The fine tip can reach deep into a juniper canopy, while the base of the blade cuts thick branches. The "purple sound" name comes from the specific shing! noise the blades make when snipping a fresh stem—described by one master as "the sound of the plant thanking you."
Phase 1: Debut and Meteoric Rise (February 2022 – 2022)
Phase 2: Industry Recognition (2023)
Phase 3: Contract Dispute and Status Change (November 2023 – Present)