• Japanese Pinless Kenzan "Voronoi" L – Sand-cast ikebana tool for Japanese flower arranging
  • Ikebana flower arrangement with Japanese Pinless Kenzan "Voronoi" L – Safe, stylish design
  • Japanese flower arranging with Japanese Pinless Kenzan "Voronoi" S – Pinless, easy-to-use
  • Craftsman pouring molten metal in Kanamori Alloy foundry making kenzan and Japanese flower vases
  • Pouring molten metal in Kanamori Alloy sand casting for ikebana kenzan and Japanese sake cup set
  • Heating mold in Kanamori Alloy foundry for crafting pinless kenzan and sake cups
  • Traditional Kanamori Alloy sand casting process making pinless kenzan and Japanese sake cup set
  • Artisan hand-finishing Kanamori Alloy sand casting for ikebana kenzan and sake cups
  • Interior of Kanamori Alloy foundry – handcrafting kenzan, ikebana vases, sake cups
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KANAMORI ALLOY

Japanese Pinless Kenzan "Voronoi"

Japanese Pinless Kenzan "Voronoi"

$160 USD
$160 USD
Sale Sold out
Shipping calculated at checkout.
size

Easily begin the traditional Japanese art of ikebana with the "Voronoi," a pinless kenzan distinguished by its organic and beautiful geometric design. This innovative ikebana flower holder was developed using 300-year-old sand casting techniques. The bronze material helps keep water fresh, making your flowers last up to 1.67 times longer. Simply slide your flower stems into the web-like structure to hold them in place, allowing anyone to create stunning arrangements with ease at home. The S size is perfect for a single bloom, while the L size can accommodate a bouquet. This modern masterpiece is a fusion of traditional craftsmanship and the beauty of natural forms, perfect for any Japanese vase.

Product Details

  • Quantity: 1
  • Dimension:
    　S: Diameter 4.5cm (1.8 in) × Height 1.8cm (0.7 in)
    　L: Diameter 6.5cm (2.6 in) × Height 2.5cm (1.0 in)
  • Weight:
    　S: 200g (0.44 lbs)
    　L: 400g (0.88 lbs)
  • Material: Bronze
  • Origin: Made in Toyama, Japan
  • Brand: KANAMORI ALLOY

Authentic Japanese Craftsmanship

  • We partner with over 20 small workshops in Japan, where artisans have honed their skills for 100+ years.
  • Every piece is 100% made in Japan, using premium local materials and traditional techniques.
  • Your order ships directly from Japan with end-to-end care.

Shipping & Delivery Details

Processing Time

  • In-stock items: typically ship within 5 business days.
  • Backordered items: ship as soon as they become available (may take longer than 5 business days).

Transit Time

  • United States, Canada, UK, EU & Australia: 3–7 business days once shipped.

Shipping Costs

  • Free on orders over USD 400 (or equivalent in your local currency).
  • Flat rate of 10-15 (local currency) on orders under USD 400:
  • USA: USD 10
  • Canada: CAD 15
  • UK: GBP 10
  • EU: Calculated at checkout (equivalent in USD 10)
  • Australia: AUD 15
  • Multiple items ship together at no extra cost.

Insured Shipping & Damage Protection

  • All orders are fully insured against accidental damage in transit.
  • For details, please see our Shipping & Returns Policy.

First-Time Purchase Savings

  • Sign up today and enjoy 10% off your first order—check your email for the coupon code and use it at checkout.
  • Free shipping on orders over USD 400 (or equivalent in your local currency) is applied automatically at checkout.

30-Day Return Guarantee

Customs & Import Duties

  • Your order may be subject to duties, taxes, or brokerage fees when it arrives.
  • These charges are determined by your local customs and are the buyer’s responsibility and are not included at checkout. 
  • See our Shipping Policy for country-specific duty-exemption thresholds.
  • For our U.S. customers: Orders shipped from Japan with a total value of USD 800 or less, import duties are waived under the U.S. “de minimis” rule.

Important Notices

  • There may be variations in color and finish due to the flow of the glaze. Please understand this in advance.
  • Dimensions are in millimeters (mm), but please allow for slight differences due to the handmade nature of the product.
  • Due to the characteristics of ceramics, please understand that there may be some differences in color.
  • The glaze contains iron, which may discolor when in contact with oil, but washing will restore its original texture.
  • Specifications of the products listed may change without prior notice. Please be advised.
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Top Highlights

  • Japanese flower arranging with Japanese Pinless Kenzan "Voronoi" S – Pinless, easy-to-use

    Effortless & Safe Flower Arranging

    Start arranging ikebana effortlessly with this pinless kenzan. Its stable, easy-to-use design is also a safer choice for homes with children and pets.

  • Artisan hand-finishing Kanamori Alloy sand casting for ikebana kenzan and sake cups

    From Rocket Science to Your Vase

    Made by a 300-year-old foundry using sand casting techniques. This same precision technology is trusted to create parts for Japan's H-IIA rocket.

  • Pouring molten metal in Kanamori Alloy sand casting for ikebana kenzan and Japanese sake cup set

    Keeps Flowers Fresh 1.6x Longer

    Enjoy your ikebana arrangements longer. The natural power of copper ions helps keep water fresh, extending the life of your flowers up to 1.6 times.

  • Japanese Pinless Kenzan "Voronoi" S – Compact ikebana tool for Japanese flower arrangement

    Sustainable, Nature-Inspired Design

    Features an intricate, nature-inspired pattern crafted with a commitment to sustainability. Made from upcycled metals, it’s a beautiful tool for your Japanese vases.

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Craftsman pouring molten metal in Kanamori Alloy foundry making kenzan and Japanese flower vases

Japanese Sand Casting: A 300-Year Heritage of Sustainable Craft

This piece is crafted by a foundry with a legacy spanning over 300 years since the Edo period. They have mastered "Sunagata-chuzo," or sand casting, a traditional Japanese technique where metal melted at 1200°C is poured into sand molds. While their exceptional craftsmanship is trusted for manufacturing cutting-edge rocket components, they also embrace a circular production model that recycles materials, showing deep consideration for the future. Each creation is infused with the enduring spirit of Japanese tradition, innovation, and sustainability.

Traditional Kanamori Alloy sand casting process making pinless kenzan and Japanese sake cup set

KANAMORI ALLOY: A 300-Year Legacy, from Rocket Science to Ikebana Vase

With a legacy spanning over 300 years since 1714, KANAMORI ALLOY, now in its 23rd generation, has a history intertwined with traditional sand casting. Remarkably, this same precision technology supplies materials for Japan's H-IIA rocket. This space-grade precision is masterfully transformed into beautiful crafts, Japanese vases, and innovative kenzan that elevate the art of ikebana. KANAMORI ALLOY is also committed to a circular society, upcycling used metals into high-purity aluminum products through their in-house refining process. It is a philosophy where tradition, innovation, and sustainability merge to craft a legacy for the future.

Ikebana flower arrangement with Japanese Pinless Kenzan "Voronoi" L – Safe, stylish design

A Stylish Kenzan to Simplify Your Ikebana

The "Voronoi" kenzan makes the art of ikebana easier and more accessible for everyone. It features a stylish design crafted through traditional sand casting—a heritage technique also trusted to produce precision rocket parts. Thanks to the natural power of copper ions, water stays fresher, helping flowers last up to 1.6 times longer. Requiring less water changing and designed for stability, it's a safe choice for homes with children and pets. The S (φ45mm) size is ideal for a single bloom, while the L (φ65mm) can hold a whole bouquet. Enjoy the serene, Japanese aesthetic of fresh flower arrangements more easily and for longer.

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