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The Changho Glossary · No. 1 · 2026.07.28
Jeongja-sal | A Changho Joined into the Character 井
It's called jeongja-sal because it resembles the character 井 (jeong). In Korean it's also called umul-sal ("well lattice") — join the same grid onto a ceiling and you get umul-banja, umul-cheonjang ("well ceiling"). It's a rare case where the Hanja name and the native Korean name both survived side by side.
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What the Eye Does, What the Mind Does · No. 1 · 2026.07.24
The Eye Gets Fooled
Some things a ruler can settle. Some things only the eye can settle.
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Back at the Bench · No. 4 · 2026.07.12
Keep Changing the Form, and the Difference Gets Buried in Noise
Creation doesn't live in the material — it lives in the joinery.
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Status Studies of Space · No. 2 · 2026.04.11
The Era's Desire, Held in a Single Door
Joseon's gasa-jehan (house-scale restrictions): a line of status defense drawn through home decor
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What the Eye Does, What the Mind Does · No. 3 · 2026.07.24
Nobody Ever Stands in That Spot
There's no fixed value, door to door
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A Second Look · No. 5 · 2026.07.25
Traditional Changho | My Hand Plane Is a Japanese Plane
To designate something as tradition, you have to stop it in its tracks.
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What the Eye Does, What the Mind Does · No. 2 · 2026.07.24
There's No Way to Make It Match
The ruler decides the dimensions; the eye decides the shape
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A Second Look · No. 4 · 2026.07.22
Traditional Changho | Must It Be Built Exactly as the Ancestors Built It?
A "traditional changho," in this exact sense, has never once existed in this world.
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A Second Look · No. 3 · 2026.07.22
Traditional Changho | Why Is This Term So Blurry?
Is a "traditional changho" one built exactly as an ancestral carpenter built it?
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Back at the Bench · No. 3 · 2026.07.04
Still Building, Today Too
Carpenter by day, programmer and writer by night. Building with wood, building with code, building with sentences — in the end, it's the same work.