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Shaping Light in Paper — The Story Behind Cosima
- by zhanglei
Behind the Design
Shaping Light in Paper
The story behind Cosima — an hourglass column of ribbed paper that turns a bare bulb into a soft, sculptural glow.
The pleated washi shade, lit from within — each rib catches the light a little differently.
Most floor lamps solve a practical problem: they put light where you need it. The Cosima Hourglass Washi Paper Floor Lamp was designed to do something quieter — to make the light itself the thing you notice. Not a bright point you look away from, but a tall, glowing column you look toward, the way you'd watch a paper lantern on a still evening.
Its shape is where the name comes from. The shade narrows at the middle and swells toward the top and base — an hourglass silhouette that reads as calm and deliberate from across a room, and never as a plain cylinder. Here's the design story behind it, and what to look for before you bring one home.
"A bare LED behind glass gives you a hot spot. The same LED behind washi becomes an even, bulb-free wash of warm light."
Why Paper, and Why It Glows the Way It Does
The shade is built from washi paper — a long-fiber paper prized for exactly this job. Its fibers cross in every direction, so when light passes through, the paper doesn't just let the glow out; it spreads it evenly, with no visible bulb and no glare line. It's the difference between a light you squint at and one you settle into.
What Makes Washi Special
Long, crossed fibers — diffuse light in every direction for an even glow.
Warm tone — the paper itself lends light a soft, amber-leaning warmth.
Holds a pleat — strong enough to be folded into fine, lasting ribs.
What It Isn't
Not glass — no hot spot, no mirror-bright reflection.
Not plastic — it has real grain and a handmade surface.
Not printed — the ribs are formed by folding, not a pattern.
Look closely and you'll see fine horizontal ribs running the height of the shade. These aren't printed on — they're pleated into the paper over a slender internal frame. The ribs give the surface its texture and its life: as you move around the lamp, the light shifts subtly from rib to rib, so a still object never looks flat.
The Craft
Made by Hand, One Rib at a Time
The frame is assembled first — a light cage of fine ribs that defines the hourglass curve. Then the paper is worked over it by hand, pleated and smoothed so each fold sits evenly against the last. It's slow, and it's why no two shades are ever perfectly identical.
In the Room
Made for the Quiet Corner
Because its light is ambient rather than task-bright, Cosima works best where you want atmosphere, not a spotlight. Tucked beside a sofa or between a chair and the wall, its full-height column fills a corner with a soft vertical glow — the second, low light that makes an evening room feel finished.
Beside a table, its column adds warmth at floor level — without the glare of an overhead fixture.
Four Things to Check Before Buying
A paper floor lamp is a considered piece. A few things worth knowing before you choose one:
Ambient, not task light
Cosima gives a soft, diffused wash — ideal for atmosphere and evenings, not for focused reading. Pair it with a reading lamp if you need brighter task light in the same spot.
Plan for its height
At roughly 63 inches tall, it reads as a full floor-height accent. Give it a corner or a gap beside furniture where its column can stand clear.
Expect natural variation
Because the shade is shaped and pleated by hand, small differences in tone and texture are natural — part of a handmade paper lamp's character, not a flaw.
Plug-in, not hardwired
It's a plug-in floor lamp built for US outlets (AC 110–120V) — no wiring or electrician needed. Set it in place, plug it in, switch it on.
Early silhouette studies — the hourglass form was chosen for how calm it reads at full height.
The Details
Questions, Answered
What is the Cosima floor lamp's shade made of?
The shade is washi paper — a long-fiber paper whose crossed fibers diffuse light into an even, warm glow with no visible bulb. It's pleated by hand over a fine internal frame to create the ribbed, hourglass shape.
How tall is the Cosima Hourglass Floor Lamp?
It stands roughly 63 inches (about 161 cm) tall, with a shade diameter of about 13 inches, on a slim metal tripod base — a full floor-height accent for a corner or beside seating.
Is the light bright enough to read by?
Cosima is designed as an ambient light, not a task light. It gives a soft, diffused wash ideal for atmosphere and low evening lighting rather than focused reading.
Why does each lamp look slightly different?
Because the paper shade is shaped and pleated by hand, small variations in tone and texture are natural and expected. No two shades are identical — those subtle differences are part of the character.
