The AIMEN Technology Center in O Porriño, Spain, has successfully manufactured the first 3D cryogenic tank for storing liquid hydrogen in aircraft. This achievement is part of the European OVERLEAF project, with a focus on developing lighter and more efficient systems for the clean aviation of the future. The innovative tank design includes a thermoplastic inner layer to maintain liquid hydrogen at extreme temperatures and an outer carbon fiber structure for added strength. AIMEN utilized pioneering large-format additive manufacturing technology to create this revolutionary tank. The manufacturing process, which lasted over 100 hours, involved cutting-edge 3D printing systems and infrared heating systems to ensure proper adhesion between layers. Additionally, AIMEN collaborated with the French center CANOE to develop a sustainable material for the tank, reinforcing its commitment to environmentally friendly structures. Xabier Pérez, a researcher at AIMEN, emphasized the significance of this project in addressing decarbonization challenges and transforming systems to make hydrogen a viable energy carrier. This collaboration solidifies AIMEN's position as a European leader in advanced manufacturing, especially in additive manufacturing with high-performance materials, contributing to the sustainable transformation of sectors like aeronautics.