On March 1st, 2025, I had the chance to participate in “Tsuchidan vol.2″—an unforgettable experience that I’d like to share with you in this post.
What is “Tsuchidan”?
Tsuchidan is a community initiative centered around “tsuchi” (clay or soil) of the Tokai region in Japan. It’s a platform for sharing the value and challenges surrounding this unique natural resource while exploring new potentials in craftsmanship and local industry.
Long ago, this area was once home to a massive lake—six times the size of Lake Biwa. The high-quality clay found at the bottom of that ancient lake laid the foundation for the local ceramics industry that thrives to this day. This clay, formed over centuries, still holds incredible potential.
However, in recent times, the value of this clay has often been overlooked. The region faces numerous challenges including shifts in industrial structure, disrupted supply chains, and a lack of successors. Tsuchidan was born as a vision for a brighter future, aiming to rethink local manufacturing and community connections.
By learning about the clay, discussing it, and drawing inspiration from it, Tsuchidan fosters a space where people can breathe new life into regional industries and spark collaborative innovation. It’s a place to connect, reflect, and co-create.
Tsuchidan vol.2: Photo Report
Tour of Kasen Mine
Kasen Mine
Our journey began with a rare visit to Kasen Mine—a place that’s typically off-limits to the public. Even for me, this was my first time stepping into a mine.
Guided by President Kato of Kasen Mine
Explanation of clay blending
We learned that the pottery clay used here is typically made by blending three types of clay.
Pressing machine
This machine compresses the clay to squeeze out moisture.
Group photo
We discussed the challenges facing mines like this one and realized just how difficult it is to keep them running. It reminded me of the importance of using finite resources like ceramic clay responsibly and sustainably.
This is called Kaerume clay
We were gifted some Kaerume clay, which we later used in the Clay Buffet session. I was excited to see how it would come into play!
Lunch at Shikinoya
We enjoyed lunch at Shikinoya.
Small plate with a “horse eye” motif from Seto Hongyo Kiln
Delicious food tastes even better when paired with beautiful handmade Japanese tableware.
Visit to Seto Hongyo Kiln
Our next stop was the Seto Hongyo Kiln. Surprisingly, I had no idea such a fascinating place existed in Seto City—even though I’ve visited multiple times!
Climbing kiln
You can actually walk all the way around this old-style climbing kiln, although it’s not currently in use.
Inside the kiln
This is how pieces used to be fired
The Mizunami area, where Yamani is based, also used to have climbing kilns like these—even at my great-grandfather’s place.
Glaze storage
At the adjacent shop and museum, you can enjoy exhibitions on Mingei (Japanese folk crafts) and also do some shopping.
Clay Talk & Clay Buffet
Clay Talk session
Clay Buffet
Mixing the clay with water
Special plaster molds by Kuroda Seikeijo
Well-kneaded Kaerume clay
Successfully removed from the mold!
Even after nearly 15 years in the ceramics industry, this was my first time experiencing the entire process—from raw clay to molded form—starting with materials straight from the mountains. It was tough work, but it helped me connect more deeply with the essence of pottery-making.
That was Tsuchidan vol.2
This wraps up my photo report on Tsuchidan vol.2. It was a rare and meaningful opportunity to reconnect with the source of our industry.
Vol.3 is scheduled to be held in Tokoname, and I’m already looking forward to it.
For the latest updates, check out RW Inc.’s website:
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