A collection of wooden chairs in a minimalist setting, with natural light casting soft shadows on display pedestals.

AtMa’s J39.5: A Thoughtful Reincarnation of Børge Mogensen’s People’s Chair

Words by Eric David

Milan, Italy

Upcycling has emerged as a defining trend in the design world, with designers and brands increasingly embracing circular principles to transform discarded and surplus materials into high-quality pieces that fuse sustainability with contemporary aesthetics. The recent Milan Design Week 2025 was a testament to this shift, showcasing a wide range of circular design initiatives that reimagine waste not as a liability, but as something that promises potential. One of the most fascinating projects which caught our eye was J39.5: a thoughtful reincarnation of Børge Mogensen’s iconic J39 chair by Tokyo-based creative studio AtMa inc., which we spotted at Alcova’s presentation at Villa Borsani. Made from radically reconfigured salvaged J39 parts, J39.5 is a meditation on loss and renewal, as much as it is proof that upcycling can be about narrative as well as resourcefulness.

A minimalist wooden chair with a woven seat, displayed on a light wooden pedestal in a stylish, modern setting.

Photography by Piergiorgio Sorgetti.

A collection of elegantly designed wooden chairs is displayed on light-colored pedestals in a dimly lit, modern setting.

Photography by Shunsuke Watanabe.

A collection of wooden chairs with woven seats displayed on a light-colored platform against a textured wall. Soft shadows enhance features.

Photography by Shunsuke Watanabe.

A wooden chair with a woven seat stands on a light-colored pedestal in a well-lit space, emphasizing its minimalist design.

Photography by Shunsuke Watanabe.

A wooden chair with a woven seat is showcased on a pedestal, with a minimalist background of gray walls and shelves.

Photography by Shunsuke Watanabe.

For AtMa inc., upcycling isn’t a novelty—it’s a philosophy. Founded in 2013 by interior designer Makoto Suzuki and artist Ayumi Koyama, the Tokyo-based studio operates at the intersection of spatial design, artistic expression, and social engagement. In addition to crafting imaginative retail spaces, restaurant interiors, and visual merchandising concepts, AtMa actively develops self-initiated projects that respond to broader social issues.

One such initiative is RECLAIMED FURNITURE, an ongoing exploration into how materials traditionally discarded by conventional design processes can be transformed into new typologies and narratives. What began as curiosity during visits to factories and warehouses, where offcuts and broken parts languished in forgotten piles, has since grown into a methodical practice of reconstructing and recontextualising objects, blending aesthetic ingenuity with ecological intent.

A simple wooden chair with a woven seat positioned on a platform against a minimalistic, concrete shelf background.

Photography by Shunsuke Watanabe.

A collection of various wooden chairs with woven seats in a cluttered space, showcasing different designs and styles.

Photography by Koji Ueda.

Diagram showing the circularity behind the production of J39.5 chairs by AtMa

Circularity, craft, and cross-cultural design. AtMa’s chair project bridges Europe and Japan through reclaimed materials and thoughtful reinvention. 

A wooden chair with a curved, slatted seat and backrest, displayed on a wooden platform among other furniture pieces in a storage area.

Photography by Koji Ueda.

Close-up of a handmade wooden chair with a natural finish, featuring a woven seat and visible stitching along the edge.

Photography by Koji Ueda.

A unique wooden chair with a woven seat and curved backrest, surrounded by wooden drawers in a modern furniture storage space.

Photography by Koji Ueda.

Close-up of a wooden chair, showcasing its natural grain, woven seat, and cross-braced support structure against a soft background.

Photography by Koji Ueda.

  • Top view of a woven seat chair with wooden frame, placed on a wooden surface in a workshop setting.

    Photography by Koji Ueda.

  • An overhead view of a wooden chair with a woven natural fiber seat, resting on a plywood surface.

    Photography by Koji Ueda.

A scattered collection of wooden sticks of varying lengths, arranged loosely on a plain white surface.

Photography by Koji Ueda.

It was during one such scavenging expedition that the seed of J39.5 was planted. AtMa came across a damaged J39 chair, its leg missing and backrest cracked, languishing among other wounded relics of mid-century craftsmanship. Designed in 1947 by Børge Mogensen for the Danish cooperative FDB Møbler, the original J39, dubbed the “People’s Chair”, was itself an ode to honest functionality. Inspired by Shaker furniture, Mogensen imbued the J39 with a quiet modesty and democratic ethos: a solid wood frame, usually either made from oak or beech, and a woven paper cord seat, resulting in a chair that could grace both rural homes and urban galleries.

AtMa’s response was not to replicate or repair but to rethink. They retained the surviving components, reconfigured them into new compositions, and called the result J39.5 (the “point five” signalling a shift in perspective rather than a half-finished version). In some chairs, the leg becomes the seat. In others, remnants are recast into raw material: broken wood is pulverised, strained into pulp, and then twisted into new paper cord. Nothing is added; only repositioned or reincarnated. Though the original components change form, they still constitute the same chair, embodying a full-circle transformation. The brilliance of J39.5 lies not only in its quiet aesthetics, but in the attitude it embodies. In a culture often obsessed with pristine perfection and sleek newness, AtMa often finds dignity in imperfection and recovery.

A collection of various wooden sticks in different lengths and textures, leaning against a wall with a cracked finish.

Photography by Koji Ueda.

A collection of wooden tools and rods arranged on a black background, showcasing various shapes and textures.

Photography by Koji Ueda.

A close-up view of coarse, brown plant fibers resembling shredded paper or insulation material, densely packed together.

Courtesy of AtMa inc.

A tangled mass of light-colored string on a black background, showcasing its intricate loops and knots.

Courtesy of AtMa inc.

A close-up of crumpled, brown kraft paper strips tangled together, showcasing a textured, organic pattern.

Courtesy of AtMa inc.

Close-up of woven natural rope on a surface, with wooden legs partially visible, highlighting intricate textures and earthy tones.

Photography by Shunsuke Watanabe.

A wooden chair with a woven straw seat sits against a textured concrete wall, showcasing minimalist design and warm tones.

Photography by Shunsuke Watanabe.

A stylish wooden chair with a woven seat, displayed on a light-colored pedestal amidst other furniture pieces and soft shadows.

Photography by Shunsuke Watanabe.

Close-up of a minimalist wooden chair with woven rope seat, showcasing intricate patterns and natural textures in warm, soft lighting.

Photography by Shunsuke Watanabe.

  • A minimalist wooden chair with a woven seat stands on a wooden platform, showcasing its elegant design against a textured wall backdrop.

    Photography by Shunsuke Watanabe.

  • A collection of wooden chairs with natural textures, showcasing minimalistic design against a textured wall and soft shadows.

    Photography by Shunsuke Watanabe.

  • Close-up of a wooden chair, showcasing its slatted seat and smooth finish, with soft shadows and warm lighting in a serene setting.

    Photography by Shunsuke Watanabe.

  • Close-up of a wooden chair leg featuring a metal label that reads "MØBL" against a dark background.

    Photography by Koji Ueda.

A wooden chair with a minimalist design, showcasing a structured seat and backrest, displayed on a light pedestal.

Photography by Piergiorgio Sorgetti.

Two minimalist wooden stools with curved seats are displayed on a wooden pedestal, illuminated by soft sunlight against a textured wall.

Photography by Piergiorgio Sorgetti.

  • A collection of wooden chairs displayed on light-colored pedestals in a dimly lit space, showcasing various designs and textures.

    Photography by Shunsuke Watanabe.

  • A collection of wooden chairs on pedestals, illuminated in a dark space, highlighting their unique designs and materials.

    Photography by Shunsuke Watanabe.

  • A dimly lit showcase features various wooden chairs displayed on light-colored pedestals against a textured dark wall.

    Photography by Shunsuke Watanabe.

  • A minimalist display of wooden chairs on elevated platforms, set against a concrete backdrop with soft lighting and shadows.

    Photography by Shunsuke Watanabe.

A collection of wooden chairs arranged on light wooden boxes, set against a dark, textured background with soft shadows.

Photography by Piergiorgio Sorgetti.

A wooden folding stool with a woven seat is displayed on a wooden platform in a minimalist space with empty concrete shelves.

Photography by Piergiorgio Sorgetti.

A dimly lit room with wooden chairs displayed on pedestals, surrounded by shadowy shelves and a concrete wall.

Photography by Sami Oliver.

A modern art installation featuring unique sculptural chairs made from various types of stone, displayed in a minimalist gallery.

Photography by Kenta Hasegawa.

This process-driven, materially reflective approach also extends to AtMa’s latest RECLAIMED FURNITURE series, titled 0%SURPLUS, which was recently exhibited at topso gallery in Tokyo (April 26 – May 25, 2025). While J39.5 breathes new life into design icons, 0%SURPLUS addresses a different kind of excess: the inevitable waste generated during interior construction projects. Whether due to breakage, miscalculations, or precautionary over-ordering, materials such as marble, tiles, wallpaper and carpet are routinely discarded once the job is done. AtMa, in collaboration with clients and contractors, began collecting these surplus materials and giving them new roles.

The resulting pieces, composed primarily of irregularly shaped marble fragments joined by minimalist stainless-steel hardware, appear both accidental and intentional. Each offcut’s peculiarities are embraced, not masked. The forms are dictated by the constraints of the waste itself, leading to compositions that feel as much sculptural as functional. It's not just a matter of reuse—it's about re-seeing, uncovering dormant beauty in what’s usually deemed unusable.

  • A minimalist chair with a large, irregular stone backrest sits on a simple, modern base in a bright, empty room.

    Photography by Kenta Hasegawa.

  • A minimalist, black stone chair with a metal seat, beside a flat stone slab, set against a plain white wall in an empty room.

    Photography by Kenta Hasegawa.

  • A minimalist black stone chair with an irregular backrest and a slab seat, set against a plain white wall.

    Photography by Kenta Hasegawa.

A collection of uniquely designed chairs made from various types of stone, arranged in a minimalistic, modern interior setting.

Photography by Kenta Hasegawa.

Three sculptural chairs made from marble and onyx with angular backs, featuring sleek metal brackets against a neutral wall.

Photography by Kenta Hasegawa.