Takuto Ohta transforms 200 leftover cedar logs into evolving furniture system
Japanese designer explores the afterlife of temporary architecture.
1Second life for exhibition materials
Japanese designer Takuto Ohta repurposed 200 Yoshino cedar logs from Nara after an exhibition. These logs were specially cut using the kerf technique to prevent cracking as they dried. Ohta acquired the entire batch and transformed them into a two-month design experiment at SKWAT in Tokyo. He tested cutting, joining and assembly techniques, leveraging each log's unique characteristics to create functional pieces while honoring their original form.
2Open-ended design process
Rather than working from predetermined designs, Ohta engaged directly with the available logs. Each intervention responded to the material's existing features. Forms and construction techniques discovered through hands-on experimentation were quickly applied to other logs. The project evolved through repetition rather than fixed drawings, with the cedar's dimensions, kerfs and inconsistencies becoming active design parameters that guided the creative process organically.
3The meaning behind log x
The project name 'log x' references both timber and the mathematical logarithm abbreviation. The 'x' represents the various forms and construction systems developed during the process. By categorizing these variations, Ohta made fabrication readable and comparable. This approach highlights the project's gradual development rather than concealing it behind a polished final collection, making the design journey transparent and educational for observers.
450 functional furniture pieces
The process yielded approximately 50 functional furniture pieces. The logs retained much of their original mass and visual character throughout transformation. Ohta worked with the dimensions and features inherited from their previous use rather than processing them into identical elements. He introduced only necessary cuts and connections to transform them into stools, benches, tables and other functional objects, celebrating each piece's unique history and material qualities.
5Material circulation as design
Log x reflects Ohta's broader interest in 'decomposition' and 'production', examining how objects can be broken down and reorganized into new relationships. While temporary exhibitions typically rely on short-lived structures, Ohta views dismantling as the start of another design phase. The project demonstrates that furniture design and material circulation can coexist, challenging conventional notions of permanence and disposability in architectural installations.
6Multifunctional log arrangements
Logs placed at regular intervals beside the adjacent café served dual purposes as visitor seating and workshop material awaiting transformation. This arrangement created a dynamic space where furniture, raw material stock and prototypes coexisted simultaneously. The project reminds us that 'temporary' need not mean 'finished with', as 200 redundant logs evolved through multiple stages - becoming a working material library, seating, prototypes and finally a cohesive family of objects.
7Sustainable design significance
The log x project exemplifies practical sustainable design by extending materials' lifecycles and reducing waste through innovative approaches. Ohta's work demonstrates how designers can look beyond temporary structures to uncover materials' latent potential, contributing to circular economy principles. This methodology raises sustainability standards in industrial design by showing how resource efficiency can coexist with aesthetic and functional excellence in furniture production.
8Impact on design practice
Takuto Ohta's project showcases the power of material-focused approaches in furniture design. This methodology that highlights natural material characteristics could inspire other designers. By proving temporary architectural projects can transform into lasting works, log x offers valuable case studies for design education. Such projects provide important lessons on balancing resource efficiency with creativity, potentially influencing how the industry approaches material reuse and sustainable production methods.