The Discovery of Fire-Resistant Clay and the Evolution of Brickmaking
The completion of the handcart brought a quiet but undeniable transformation to Akio and his family’s daily life. Tasks that once required all three men—Akio, Alto, and Kenta—to spend an entire day hauling firewood or clay were now completed in half the time and effort, thanks to their single cart. This new efficiency freed up time for other pursuits, and their overall quality of life improved dramatically.
Akio began channeling this newfound capacity into designing the more advanced structures Ayane had long wished for: a proper bread oven and a more efficient cooking stove. But for that, he knew they would need materials capable of withstanding even higher temperatures than their current bricks allowed.
Then came a fateful day. Akio, Alto, and Sylvia—who had been tending to the herb garden—set off to their usual stream to gather more clay, pulling the handcart behind them. Thanks to the cart, they were able to venture a little further than usual.
“Akio-san, the soil here looks different!” Alto called out, pointing to a slope just off the streambed where reddish earth was exposed. Akio and Sylvia approached and found a layer of clay with a distinctly different hue—paler and slightly gritty to the touch.
Akio picked up a handful and kneaded it between his fingers. It felt denser and stickier than their usual clay. Sylvia studied the soil carefully, then drew in a small breath.
“This clay… harbors an unusual fire affinity. It resembles what the ancient Elves once called kakando, the fire-cleansed earth, said to be blessed by the power of fire spirits. It should be able to withstand far higher temperatures than ordinary clay.”
Akio’s eyes lit up. “Really, Sylvia? If this clay is truly that heat-resistant…”
Wasting no time, they brought back samples of the new clay—which they temporarily dubbed “kakando” based on Sylvia’s words—and Akio immediately began experimenting with it. Following Sylvia’s advice, he mixed it with their existing clay in specific ratios, kneading it thoroughly before molding it with their brick frames. They took great care during the drying process, allowing it to set slowly and evenly.
When it came time to fire the bricks, Akio upgraded their makeshift kiln and fed it more firewood than ever before, pushing it to reach the highest possible temperatures.
Several days later, the new bricks were removed from the kiln—and they were clearly different. Their color was a pale reddish-brown, and they rang with a high-pitched, metallic tone when struck. As a test, Akio placed a few of them in an open flame for extended periods. Unlike their previous bricks, they showed no signs of softening or cracking.
“It worked…! These can take serious heat!” Akio exclaimed, feeling the weight and strength of the firebrick in his hands. He was thrilled by the result.
The first application for these new firebricks was a small high-temperature kiln. Though simple in design, Akio engineered it carefully to retain and reflect heat efficiently, with clever airflow control and strategic brick placement.
The first thing they tested in this new kiln was refiring some of their earlier earthenware. Baked now at temperatures impossible with open-pit firing, the pieces came out transformed: smoother surfaces, clearer ringing sounds when tapped, and nearly watertight walls. The quality was so refined, it could rightfully be called ceramic.
“Amazing…! We can actually keep water in these without it seeping out,” Ayane exclaimed as she held one of the reborn jars in awe.
Next, they used the kiln to bake bread—and the results were astonishing. The crust was crispy and golden, the inside soft and fluffy, cooked perfectly through. Even Sylvia widened her eyes in delight at the taste.
The firebricks and high-temperature kiln marked a revolutionary step forward in their technology. Stronger, higher-quality dishes. Delicious bread like never before. But more than that, a bold dream in Akio’s heart edged closer to reality: building a furnace capable of extracting iron from that red-black ore.
“With these bricks… with this kiln design… maybe—just maybe—”
His eyes settled on the lump of iron ore carefully stored in a corner of the cabin, glowing with determination. Sylvia, too, watched his expression with deep trust and growing anticipation.
Their burning passion—undaunted by even the summer heat—was about to ignite a new flame of invention deep within the forest.
What do you think about this chapter?
