Kamahachi by Kanamori Alloy

From a 300-year-old aluminium and copper factory for rockets production
To a sand casting lifestyle goods store

Kanamori Alloy makes aluminum and copper products using traditional sand casting technology. The company, based in Kanazawa on the Sea of Japan coast, has a reputation for craftsmanship built over more than 300 years, fashioning everything from samurai armor to components for Japan’s H-IIA rocket.

Starting from 2019, it began selling consumer products for the first time since its founding. Its stylish, high performance goods include an innovative kenzan — the spiked metal stands used in flower arrangements — that helps cut flowers last longer, and a plate that keeps sashimi or ice cream cold.

In sand casting, molten metal is poured into a mold made from sand to make parts. Hiroko Koge, a 24th-generation descendant of Kanamori Alloy’s founding family, says using sand makes it possible to create molds of any shape.

Koge’s ancestors were recognized for their skill by Toshinaga Maeda (1562-1614), head of the Kaga domain, near present-day Kanazawa. They began by making spears, armor and furnishings such as ritual bronze bells for the Kaga clan.

Today, Kanamori Alloy specializes in making sand molds, as well as manufacturing the metal parts. At its factory, one sees molten copper bubbling away in a furnace at 1,200 C. A craftsman purifies the molten copper by keeping it at a boil for 150 to 180 minutes, skimming off the slag like a chef straining broth.

Kanamori Alloy’s aluminum plates have good heat conductivity, and are good for keeping hot dishes hot and cold ones cold, she added. Its products are all made by hand by craftsmen. It has also come up with a shoe keeper made from copper alloy.

With the strength of its refining technology to supply rocket component materials, we dissolve pure materials, scrapped products, and shavings and circulate them into materials refined to Japanese industrial standards.

For aluminum alloy, aluminum plates used in newspaper printing are melted at a high temperature of 800°C to remove impurities and produce high-purity aluminum, which is then turned into products. We will continue our recycling-oriented manufacturing of materials in order to maintain the global environment.