Size 40 Clamshell Go Stones / Hamaguri Go Stones Double-Convex with Go Bowls

This set replicates the classic Size 40 Hamaguri Go stone specifications, featuring high-precision 3D printing to create double-convex Go stones. It balances the warm feel of traditional Go equipment with the precise stability of modern manufacturing, making it suitable for daily play, teaching demonstrations, and collection display.

✨ Product Highlights
🎲 Replicated Size 40 Classic Specifications
Thickness approximately 11.5mm, closely matching the visual weight and placement feel of traditional shell Go stones

Double-convex shape — the center of the stone is raised, with edges gradually thinning, perfectly replicating the iconic silhouette of Japanese Hamaguri Go stones

🖨️ High-Precision 3D Printing
Each stone's dimensional error is controlled within ±0.1mm, ensuring neat and uniform arrangement

The surface is finely polished, with a warm touch, free from burrs and layer lines

♟️ Distinct Black and White, Excellent Texture
White stones: Matte porcelain white texture, simulating the subtle luster of natural clamshell patterns

Black stones: Deep indigo black, calm and understated, forming an elegant contrast with the white stones

🏺 Includes Matching Go Bowls
Cylindrical Go bowls with wide openings for easy stone retrieval and placement

Smooth inner and outer walls

Tight-fitting lids for easy storage and portability

📦 Set Contents

Note: The number of stones is sufficient for playing on a standard 19x19 Go board

🔧 Care Instructions
Daily cleaning: Wipe gently with a soft cloth, avoid alcohol or corrosive solvents

Storage recommendations: After playing, store in Go bowls in a cool, dry place, away from direct sunlight

Drop resistance: 3D printed material has some flexibility, but it is still recommended to handle with care

✅ Applicable Scenarios
Go teaching institutions — standard specifications, precise feel for student practice

Home games — elegant and durable, not easily broken

Gift for Go enthusiasts — unique yet retaining traditional charm

Each stone carries a thousand years of Go tradition; a set of black and white stones conceals countless brilliant moves. This 3D printed Size 40 Hamaguri Go stone set is dedicated to those who love Go and appreciate the beauty of craftsmanship.