Kawajiri Seitojo: Mastering the Art of Traditional Ceramics in Mashiko
Mr Kawajiri is a potter from Mashiko, renowned for his unique ceramics which are modern design using traditional techniques. One of the key methods he employs is the climbing kiln (登り窯)—a centuries-old process that sets his work apart.
What Is a Climbing Kiln?
A climbing kiln is traditionally constructed on an inclined slope and features multiple rooms. Its name comes from the way it appears to "climb" up the incline. This type of kiln uses wood as its fuel source, and the combustion gases circulate naturally through gravity. The inclined geography helps maintain a consistent temperature throughout the kiln, ensuring the ceramics are evenly fired.
The firing process is the main event in ceramic making. Ceramics are fired at temperatures reaching 1300 degrees Celsius for two continuous days and nights. Without temperature controllers in the kiln, Mr Kawajiri must monitor the process in person, relying on his great skill and years of experience. After this intense period, the kiln slowly cools down over the next few days until it drops below 100 degrees Celsius. At Kawajiri Seitojo, Mr. Kawajiri fires his kiln twice a year, preparing for months to ensure a full load of ceramics for each firing.
The Charm of Climbing Kiln Ceramics
While the climbing kiln method can lead to many losses due to its unpredictability and labour-intensive nature, Mr Kawajiri values the unique qualities of ceramics made in climbing kiln. When ceramics are hit with strong fire, they turn out in dark brown colour, on the other hand, they will be in light brown when fire did not hit directly. Those charms only can be created by traditional kiln, and it is said that it is impossible to create the exact same ceramics again. It adopts the Japanese concept of Ichigo-Ichie (一期一会), which refers to one moment one chance. He compares the difference between ceramics fired in a climbing kiln and those made with modern methods to the difference between rice cooked in an electric rice cooker versus a traditional clay pot. The former may be more efficient, but the latter offers a depth of flavour and texture that is unmatched.
Materials: True to Mashiko Tradition
In his work, Mr Kawajiri uses locally sourced materials, such as clay and traditional glazes from Mashiko. Clay from Mashiko contains large grains, that will give subtle appearances. Glazes in brown, white, green and blue. Blue is not a traditional Mashiko colour, but he was inspired by Okinawa where pottery using the climbing kiln is still active like they do firing 5-6 times and Mr Kawajiri practiced there for 2 years. He focuses on using local materials ensuring that his pieces are true representations of Mashiko ware.
The Decline of Climbing Kilns
Though climbing kilns were once a familiar sight in pottery towns across Japan, their use has steadily declined with the rise of modern firing methods. Gas kilns, in particular, offer higher efficiency, easier management, and fewer production losses. In Mashiko, there were 92 climbing kilns recorded in 1986 — but by 2022, only 31 were still being used.
Because operating a climbing kiln demands exceptional skill, long hours, and deep experience, ceramics fired in this traditional way have become increasingly rare.
Why the Tradition Matters
Gas kilns create stable results, but they cannot replicate the rustic textures, natural colour variations, and beautiful unpredictability formed by wood-fired flames.
Despite the challenges, Mr Kawajiri continues to fire his work in a traditional climbing kiln. His dedication offers a glimpse into the craftsmanship, patience, and passion that artisans pour into their creations. When we understand the process behind these ceramics, we gain a richer appreciation for the artistry — and the story — embedded in every piece.