Underlight at Llum Barcelona 2026

The Institute for Advanced Architecture of Catalonia successfully hosted a five-day intensive workshop on large-scale 3D printing with bio-based materials in Barcelona from February 16 to 20. The free, hands-on program brought together participants from diverse backgrounds to explore sustainable approaches to robotic fabrication and construction.

The workshop was delivered as part of the European Union–funded CiD Innovation Alliance project, in collaboration with Materiom, a platform known for advancing circular and bio-based material solutions. Together, the partners created an educational experience aimed at addressing the urgent need for more sustainable construction practices in the architecture, engineering, and construction sectors.

Exploration and hands-on approach

Throughout the program, participants were introduced to innovative workflows that combined digital design, robotic manufacturing, and material experimentation. The curriculum covered key topics such as extrusion-based 3D printing, robotic fabrication using ABB industrial robots, design for additive manufacturing, and the development of toolpaths and G-code. Attendees also engaged directly with bio-based materials, with a particular focus on cork-based composites.

These materials were explored for their potential as lightweight, biodegradable, and circular alternatives to traditional construction systems, offering benefits such as thermal and acoustic insulation.

The structure of the workshop blended lectures, discussions, and practical sessions. Participants experimented with materials, developed digital simulations, and ultimately produced full-scale 1:1 prototypes using large-scale 3D printing technologies. This hands-on approach allowed them to gain direct insight into the possibilities and challenges of sustainable fabrication while interacting with industry professionals.

Emerging construction technologies

Open to individuals of all experience levels, the workshop welcomed architects, designers, engineers, students, and researchers without requiring prior knowledge of robotics or 3D printing. By the end of the five days, participants had acquired a foundational understanding of emerging construction technologies and their role in reducing environmental impact.

By combining IAAC’s expertise in advanced architecture with Materiom’s leadership in biomaterials and the sustainability-driven framework of the CiD project, the workshop provided a valuable platform for learning and collaboration. It highlighted how innovative tools and bio-based materials can help shape a more sustainable future for the built environment.