html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd" Japanese architect Shigeru Ban has created the Blue Ocean Dome (BOD) for the Osaka-Kansai Expo 2025, addressing the urgent issue of marine plastic pollution and raising crucial awareness about it.Named Blue Ocean Dome, the pavilion stands out with its innovative design, comprising three distinct dome types: Dome A, Dome B, and Dome C. Each dome is specifically crafted to host captivating installations and dynamic exhibitions, promising an unforgettable experience for all visitors throughout the event. Image © Taiki FukaoThe project was commissioned by the Zero Emissions Research and Initiatives (ZERI), a global network of creative minds, seeking solutions to the ever increasing problems of the world.Rather than outright rejecting plastic, the pavilion inspires deep reflection on how we use and manage materials, highlighting our critical responsibility to make sustainable choices for the future.The BOD merges traditional and modern materials—like bamboo, paper, and carbon fiber reinforced plastic (CFRP)—to unlock new and innovative architectural possibilities.Dome A, serving as the striking entrance, is expertly crafted from laminated bamboo. This innovative design not only showcases the beauty of bamboo but also tackles the pressing issue of abandoned bamboo groves in Japan, which pose a risk to land stability due to their shallow root systems.Utilizing raw bamboo for structural purposes is often difficult; however, through advanced processing, it is transformed into thin, laminated boards that boast strength even greater than that of conventional wood. These boards have been skillfully fashioned into a remarkable 19-meter dome, drawing inspiration from traditional Japanese bamboo hats. This project brilliantly turns an environmental challenge into a sustainable architectural solution, highlighting the potential of bamboo as a valuable resource.Dome B stands as the central and largest structure of its kind, boasting a remarkable diameter of 42 meters. It is primarily constructed from Carbon Fiber Reinforced Polymer (CFRP), a cutting-edge material revered for its extraordinary strength-to-weight ratio—four times stronger than steel yet only one-fifth the weight. While CFRP is predominantly seen in industries such as aerospace and automotive due to its high cost, its application in architecture is pioneering.In this project, the choice of CFRP was not just advantageous; it was essential. The primary goal was to minimize the foundation weight on the reclaimed land of the Expo site, making sustainability a top priority. To mitigate the environmental consequences of deep foundation piles, the structure had to be lighter than the soil excavated for its foundation. CFRP not only met this stringent requirement but also ensured the dome's structural integrity, showcasing a perfect marriage of innovation and environmental responsibility.Dome C, with its impressive 19-meter diameter, is crafted entirely from paper tubes that are 100% recyclable after use. Its innovative design features a three-dimensional truss structure, connected by elegant wooden spheres, evoking the beauty of molecular structures.To champion sustainability and minimize waste following the six-month Expo, the entire BOD pavilion has been meticulously designed for effortless disassembly and relocation. It is anchored by a robust steel foundation system and boasts a modular design that allows it to be conveniently packed into standard shipping containers. After the Expo concludes, this remarkable pavilion will be transported to the Maldives, where it will be transformed into a stunning resort facility, breathing new life into its design and purpose.Recently, Shigeru Ban's Paper Log House was revealed at Philip Johnson's Glass House Venue. In addition, Ban installed his Paper Partition Shelters (PPS) for the victims of the Turkey-Syria earthquake in Mersin and Hatay provinces of Turkey.All images © Hiroyuki Hirai unless otherwise stated.> via Shigeru Ban Architects 

Solar air heating is among the most cost-effective applications of solar thermal energy. These systems are used for space heating and preheating fresh air for ventilation, typically using glazed or unglazed perforated solar collectors. The collectors draw in outside air, heat it using solar energy, and then distribute it through ductwork to meet building heating and fresh air needs. In 2024, Canada led again the world for the at least seventh year in a row in solar air heating adoption. The four key suppliers – Trigo Energies, Conserval Engineering, Matrix Energy, and Aéronergie – reported a combined 26,203 m2 (282,046 ft2) of collector area sold last year. Several of these providers are optimistic about the growing demand. These findings come from the newly released Canadian Solar Thermal Market Survey 2024, commissioned by Natural Resources Canada. Canada is the global leader in solar air heating. The market is driven by a strong network of experienced system suppliers, optimized technologies, and a few small favorable funding programs – especially in the province of Quebec. Architects and developers are increasingly turning to these cost-effective, façade-integrated systems as a practical solution for reducing onsite natural gas consumption. Despite its cold climate, Canada benefits from strong solar potential with solar irradiance in many areas rivaling or even exceeding that of parts of Europe. This makes solar air heating not only viable, but especially valuable in buildings with high fresh air requirements including schools, hospitals, and offices. The projects highlighted in this article showcase the versatility and relevance of solar air heating across a range of building types, from new constructions to retrofits. Figure 1: Preheating air for industrial buildings: 2,750 m2 (29,600 ft2) of Calento SL solar air collectors cover all south-west and south-east facing facades of the FAB3R factory in Trois-Rivières, Quebec. The hourly unitary flow rate is set at 41 m3/m2 or 2.23 cfm/ft2 of collector area, at the lower range because only a limited number of intake fans was close enough to the solar façade to avoid long ventilation ductwork. Photo: Trigo Energies Quebec’s solar air heating boom: the Trigo Energies story Trigo Energies makes almost 90 per cent of its sales in Quebec. “We profit from great subsidies, as solar air systems are supported by several organizations in our province – the electricity utility Hydro Quebec, the gas utility Energir and the Ministry of Natural Resources,” explained Christian Vachon, Vice President Technologies and R&D at Trigo Energies. Trigo Energies currently has nine employees directly involved in planning, engineering and installing solar air heating systems and teams up with several partner contractors to install mostly retrofit projects. “A high degree of engineering is required to fit a solar heating system into an existing factory,” emphasized Vachon. “Knowledge about HVAC engineering is as important as experience with solar thermal and architecture.” One recent Trigo installation is at the FAB3R factory in Trois-Rivières. FAB3R specializes in manufacturing, repairing, and refurbishing large industrial equipment. Its air heating and ventilation system needed urgent renovation because of leakages and discomfort for the workers. “Due to many positive references he had from industries in the area, the owner of FAB3R contacted us,” explained Vachon. “The existence of subsidies helped the client to go for a retrofitting project including solar façade at once instead of fixing the problems one bit at a time.” Approximately 50 per cent of the investment costs for both the solar air heating and the renovation of the indoor ventilation system were covered by grants and subsidies. FAB3R profited from an Energir grant targeted at solar preheating, plus an investment subsidy from the Government of Quebec’s EcoPerformance Programme.   Blue or black, but always efficient: the advanced absorber coating In October 2024, the majority of the new 2,750 m² (29,600 ft2) solar façade at FAB3R began operation (see figure 1). According to Vachon, the system is expected to cover approximately 13 per cent of the factory’s annual heating demand, which is otherwise met by natural gas. Trigo Energies equipped the façade with its high-performance Calento SL collectors, featuring a notable innovation: a selective, low-emissivity coating that withstands outdoor conditions. Introduced by Trigo in 2019 and manufactured by Almeco Group from Italy, this advanced coating is engineered to maximize solar absorption while minimizing heat loss via infrared emission, enhancing the overall efficiency of the system. The high efficiency coating is now standard in Trigo’s air heating systems. According to the manufacturer, the improved collector design shows a 25 to 35 per cent increase in yield over the former generation of solar air collectors with black paint. Testing conducted at Queen’s University confirms this performance advantage. Researchers measured the performance of transpired solar air collectors both with and without a selective coating, mounted side-by-side on a south-facing vertical wall. The results showed that the collectors with the selective coating produced 1.3 to 1.5 times more energy than those without it. In 2024, the monitoring results were jointly published by Queen’s University and Canmat Energy in a paper titled Performance Comparison of a Transpired Air Solar Collector with Low-E Surface Coating. Selective coating, also used on other solar thermal technologies including glazed flat plate or vacuum tube collectors, has a distinctive blue color. Trigo customers can, however, choose between blue and black finishes. “By going from the normal blue selective coating to black selective coating, which Almeco is specially producing for Trigo, we lose about 1 per cent in solar efficiency,” explained Vachon. Figure 2: Building-integrated solar air heating façade with MatrixAir collectors at the firehall building in Mont Saint Hilaire, south of Montreal. The 190 m2 (2,045 ft2) south-facing wall preheats the fresh air, reducing natural gas consumption by 18 per cent compared to the conventional make-up system. Architect: Leclerc Architecture. Photo: Matrix Energy Matrix Energy: collaborating with architects and engineers in new builds The key target customer group of Matrix Energy are public buildings – mainly new construction. “Since the pandemic, schools are more conscious about fresh air, and solar preheating of the incoming fresh air has a positive impact over the entire school year,” noted Brian Wilkinson, President of Matrix Energy. Matrix Energy supplies systems across Canada, working with local partners to source and process the metal sheets used in their MatrixAir collectors. These metal sheets are perforated and then formed into architectural cladding profiles. The company exclusively offers unglazed, single-stage collectors, citing fire safety concerns associated with polymeric covers. “We have strong relationships with many architects and engineers who appreciate the simplicity and cost-effectiveness of transpired solar air heating systems,” said President Brian Wilkinson, describing the company’s sales approach. “Matrix handles system design and supplies the necessary materials, while installation is carried out by specialized cladding and HVAC contractors overseen by on-site architects and engineers,” Wilkinson added. Finding the right flow: the importance of unitary airflow rates One of the key design factors in solar air heating systems is the amount of air that passes through each square meter of the perforated metal absorber,  known as the unitary airflow rate. The principle is straightforward: higher airflow rates deliver more total heat to the building, while lower flow rates result in higher outlet air temperatures. Striking the right balance between air volume and temperature gain is essential for efficient system performance. For unglazed collectors mounted on building façades, typical hourly flow rates should range between 120 and 170 (m3/h/m2), or 6.6 to 9.4 cfm/ft2. However, Wilkinson suggests that an hourly airflow rate of around 130 m³/h/m² (7.2 cfm/ft2) offers the best cost-benefit balance for building owners. If the airflow is lower, the system will deliver higher air temperatures, but it would then need a much larger collector area to achieve the same air volume and optimum performance, he explained. It’s also crucial for the flow rate to overcome external wind pressure. As wind passes over the absorber, air flow through the collector’s perforations is reduced, resulting in heat losses to the environment. This effect becomes even more pronounced in taller buildings, where wind exposure is greater. To ensure the system performs well even in these conditions, higher hourly airflow rates typically between 150 and 170 m³/m² (8.3 to 9.4 cfm/ft2)  are necessary. Figure 3: One of three apartment blocks of the Maple House in Toronto’s Canary District. Around 160 m2 (1,722 ft2) of SolarWall collectors clad the two-storey mechanical penthouse on the roof. The rental flats have been occupied since the beginning of 2024. Collaborators: architects-Alliance, Claude Cormier et Associés, Thornton Tomasetti, RWDI, Cole Engineering, DesignAgency, MVShore, BA Group, EllisDon. Photo: Conserval Engineering Solar air heating systems support LEED-certified building designs Solar air collectors are also well-suited for use in multi-unit residential buildings. A prime example is the Canary District in Toronto (see Figure 3), where single-stage SolarWall collectors from Conserval Engineering have been installed on several MURBs to clad the mechanical penthouses. “These penthouses are an ideal location for our air heating collectors, as they contain the make-up air units that supply corridor ventilation throughout the building,” explained Victoria Hollick, Vice President of Conserval Engineering. “The walls are typically finished with metal façades, which can be seamlessly replaced with a SolarWall system – maintaining the architectural language without disruption.” To date, nine solar air heating systems have been commissioned in the Canary District, covering a total collector area of over 1,000 m² (10,764 ft2). “Our customers have many motivations to integrate SolarWall technology into their new construction or retrofit projects, either carbon reduction, ESG, or green building certification targets,” explained Hollick. The use of solar air collectors in the Canary District was proposed by architects from the Danish firm Cobe. The black-colored SolarWall system preheats incoming air before it is distributed to the building’s corridors and common areas, reducing reliance on natural gas heating and supporting the pursuit of LEED Gold certification. Hollick estimates the amount of gas saved between 10 to 20 per cent of the total heating load for the corridor ventilation of the multi-unit residential buildings. Additional energy-saving strategies include a 50/50 window-to-wall ratio with high-performance glazing, green roofs, high-efficiency mechanical systems, LED lighting, and Energy Star-certified appliances. The ideal orientation for a SolarWall system is due south. However, the systems can be built at any orientation up to 90° east and west, explained Hollick. A SolarWall at 90° would have approximately 60 per cent of the energy production of the same area facing south.Canada’s expertise in solar air heating continues to set a global benchmark, driven by supporting R&D, by innovative technologies, strategic partnerships, and a growing portfolio of high-impact projects. With strong policy support and proven performance, solar air heating is poised to play a key role in the country’s energy-efficient building future. Figure 4: Claude-Bechard Building in Quebec is a showcase project for sustainable architecture with a 72 m2 (775 ft2) Lubi solar air heating wall from Aéronergie. It serves as a regional administrative center. Architectural firm: Goulet et Lebel Architectes. Photo: Art Massif Bärbel Epp is the general manager of the German Agency solrico, whose focus is on solar market research and international communication. The post Op-ed: Canada’s leadership in solar air heating—Innovation and flagship projects appeared first on Canadian Architect.

Graduate Student Develops an A.I.-Based Approach to Restore Time-Damaged Artwork to Its Former Glory The method could help bring countless old paintings, currently stored in the back rooms of galleries with limited conservation budgets, to light Scans of the painting retouched with a new technique during various stages in the process. On the right is the restored painting with the applied laminate mask. Courtesy of the researchers via MIT In a contest for jobs requiring the most patience, art restoration might take first place. Traditionally, conservators restore paintings by recreating the artwork’s exact colors to fill in the damage, one spot at a time. Even with the help of X-ray imaging and pigment analyses, several parts of the expensive process, such as the cleaning and retouching, are done by hand, as noted by Artnet’s Jo Lawson-Tancred. Now, a mechanical engineering graduate student at MIT has developed an artificial intelligence-based approach that can achieve a faithful restoration in just hours—instead of months of work. In a paper published Wednesday in the journal Nature, Alex Kachkine describes a new method that applies digital restorations to paintings by placing a thin film on top. If the approach becomes widespread, it could make art restoration more accessible and help bring countless damaged paintings, currently stored in the back rooms of galleries with limited conservation budgets, back to light. The new technique “is a restoration process that saves a lot of time and money, while also being reversible, which some people feel is really important to preserving the underlying character of a piece,” Kachkine tells Nature’s Amanda Heidt. Meet the engineer who invented an AI-powered way to restore art Watch on While filling in damaged areas of a painting would seem like a logical solution to many people, direct retouching raises ethical concerns for modern conservators. That’s because an artwork’s damage is part of its history, and retouching might detract from the painter’s original vision. “For example, instead of removing flaking paint and retouching the painting, a conservator might try to fix the loose paint particles to their original places,” writes Hartmut Kutzke, a chemist at the University of Oslo’s Museum of Cultural History, for Nature News and Views. If retouching is absolutely necessary, he adds, it should be reversible. As such, some institutions have started restoring artwork virtually and presenting the restoration next to the untouched, physical version. Many art lovers might argue, however, that a digital restoration printed out or displayed on a screen doesn’t quite compare to seeing the original painting in its full glory. That’s where Kachkine, who is also an art collector and amateur conservator, comes in. The MIT student has developed a way to apply digital restorations onto a damaged painting. In short, the approach involves using pre-existing A.I. tools to create a digital version of what the freshly painted artwork would have looked like. Based on this reconstruction, Kachkine’s new software assembles a map of the retouches, and their exact colors, necessary to fill the gaps present in the painting today. The map is then printed onto two layers of thin, transparent polymer film—one with colored retouches and one with the same pattern in white—that attach to the painting with conventional varnish. This “mask” aligns the retouches with the gaps while leaving the rest of the artwork visible. “In order to fully reproduce color, you need both white and color ink to get the full spectrum,” Kachkine explains in an MIT statement. “If those two layers are misaligned, that’s very easy to see. So, I also developed a few computational tools, based on what we know of human color perception, to determine how small of a region we can practically align and restore.” The method’s magic lies in the fact that the mask is removable, and the digital file provides a record of the modifications for future conservators to study. Kachkine demonstrated the approach on a 15th-century oil painting in dire need of restoration, by a Dutch artist whose name is now unknown. The retouches were generated by matching the surrounding color, replicating similar patterns visible elsewhere in the painting or copying the artist’s style in other paintings, per Nature News and Views. Overall, the painting’s 5,612 damaged regions were filled with 57,314 different colors in 3.5 hours—66 hours faster than traditional methods would have likely taken. Overview of Physically-Applied Digital Restoration Watch on “It followed years of effort to try to get the method working,” Kachkine tells the Guardian’s Ian Sample. “There was a fair bit of relief that finally this method was able to reconstruct and stitch together the surviving parts of the painting.” The new process still poses ethical considerations, such as whether the applied film disrupts the viewing experience or whether A.I.-generated corrections to the painting are accurate. Additionally, Kutzke writes for Nature News and Views that the effect of the varnish on the painting should be studied more deeply. Still, Kachkine says this technique could help address the large number of damaged artworks that live in storage rooms. “This approach grants greatly increased foresight and flexibility to conservators,” per the study, “enabling the restoration of countless damaged paintings deemed unworthy of high conservation budgets.” Get the latest stories in your inbox every weekday.

The epidermis (skin) is the body’s largest organ, so it would make sense that toxins found in fabrics that sit on the skin’s surface could be absorbed by the skin and make their way into the bloodstream. And polyester has been considered a particularly suspect fabric because it’s made from a chemical called polyethylene terephthalate, a plastic polymer used in various products.One study published in 1993 followed 24 dogs who were divided into two equal groups, one group wore cotton underpants and the other polyester. At the end of the study period, there was a significant decrease in sperm count and an increase in sperm abnormalities in the dogs who wore the polyester pants. But that said, this study is three decades old, done on dogs, and has had little additional research to show for it since.So, the jury is certainly still out as to whether fabrics decrease fertility, but there are some things that we do know. Chemicals Found in PolyesterAccording to Audrey Gaskins, an associate professor of environmental health at Emory University, most studies are focused on specific chemicals that might be found in fabrics rather than the fabrics themselves, and those chemicals are usually measured in blood or urine. But fabrics like polyester can contain a number of chemicals that might impact fertility. PFAS, short for per- and polyfluoroalkyl substances, are a group of chemicals found in thousands of products, and they’re difficult for the body to eliminate.“PFAS are commonly found in water-resistant clothing,” says Gaskins. However, drinking water is likely the most common avenue of exposure, as well as non-stick cookware, and many others.Research has shown that PFAS can reduce fertility in women by some 40 percent. According to NIH’s National Institute for Environmental Health Sciences, high levels of PFAS found in the blood were linked to a reduced chance of pregnancy and live birth. Other research has shown that PFAS are linked to increased instances of endometriosis and polycystic ovary syndrome (PCOS), both of which reduce fertility.Poor Pregnancy OutcomesPolyester (when combined with spandex) may also contain bisphenol A (BPA), another chemical compound that has been shown to potentially impact fertility. A December 2022 study published in the Journal of Clinical Medicine found a higher prevalence of PCOS in women with high amounts of BPA in their blood.Finally, polyester can contain phthalates, a chemical commonly used in things like sports bras and other pieces of clothing. These, too, have been shown to have a negative impact on fertility. A study published in the September 2021 issue of the journal Best Practice & Research Clinical Endocrinology & Metabolism found that higher concentrations of the chemical have been associated with decreased rates of pregnancy, increased incidences of miscarriage, and other pregnancy complications.“We’ve found suggestive associations between higher concentrations of bisphenol and phthalate metabolites and worse markers of reproductive health like poor success with IVF,” says Gaskins. “What we don’t know is where the source of exposure is coming from.”Exposure to Fertility-Decreasing ChemicalsStill, the obvious implication if you’re trying to get pregnant is to try to decrease your exposure to any of these chemicals through any route possible, especially when you have control over exposure. If we know there are chemicals in these fabrics, decreasing use of them would be more achievable for many people compared to, say, changing your drinking water, says Gaskins.There’s definitely no downside to decreasing your exposure to these chemicals, and while clothing is likely not the largest means of exposure to things like PFAs, phthalates, and BPA, if you’re trying to get pregnant, they’re certainly a good place to start.This article is not offering medical advice and should be used for informational purposes only.Article SourcesOur writers at Discovermagazine.com use peer-reviewed studies and high-quality sources for our articles, and our editors review for scientific accuracy and editorial standards. Review the sources used below for this article:National Institute of Environmental Health Sciences. PFAS Exposure Linked to Reduced Fertility in Women Center for Environmental Health. What You Need to Know About BPA in ClothingJournal of Clinical Medicine. Bisphenol-A and Female Fertility: An Update of Existing Epidemiological StudiesBest Practice & Research Clinical Endocrinology & Metabolism. Phthalates, ovarian function and fertility in adulthoodSara Novak is a science journalist based in South Carolina. In addition to writing for Discover, her work appears in Scientific American, Popular Science, New Scientist, Sierra Magazine, Astronomy Magazine, and many more. She graduated with a bachelor’s degree in Journalism from the Grady School of Journalism at the University of Georgia. She's also a candidate for a master’s degree in science writing from Johns Hopkins University (expected graduation 2023).

Additive Manufacturing UK (AMUK)’s first Members Forum of 2025 was held at Siemens’ UK headquarters in South Manchester earlier this year. The event featured presentations from AMUK members and offered attendees a chance to network and share insights.  Ahead of the day-long meetup, 3D Printing Industry caught up with Joshua Dugdale, Head of AMUK, to learn more about the current state of additive manufacturing and the future of 3D printing in Britain.  AMUK is the United Kingdom’s primary 3D printing trade organization. Established in 2014, it operates within the Manufacturing Technologies Association (MTA) cluster. Attendees at this year’s first meetup spanned the UK’s entire 3D printing ecosystem. Highlights included discussion on precious materials from Cookson Industrial, simulation software from Siemens, digital thread solutions from Kaizen PLM, and 3D printing services provided by ARRK.  With a background in mechanical engineering, Dugdale is “responsible for everything and anything AMUK does as an organization.” According to the Loughborough University alumnus, who is also Head of Technology and Skills at the MTA, AMUK’s core mission is to “create an environment in the UK where additive manufacturing can thrive.” He elaborated on how his organization is working to increase the commercial success of its members within the “struggling” global manufacturing environment. Dugdale shared his perspective on the key challenges facing 3D printing in the UK. He pointed to a “tough” operating environment hampered by global financial challenges, which is delaying investments.  Despite this, AMUK’s leader remains optimistic about the sector’s long-term potential, highlighting the UK’s success in R&D and annual 3D printing intellectual property (IP) output. Dugdale emphasized the value of 3D printing for UK defense and supply chain resilience, arguing that “defense will lead the way” in 3D printing innovation.  Looking ahead, Dugdale called on the UK Government to create a unified 3D printing roadmap to replace its “disjointed” approach to policy and funding. He also shared AMUK’s strategy for 2025 and beyond, emphasizing a focus on eductaion, supply chain visibility, and standards. Ultimately, the AMUK figurehead shared a positive outlook on the future of 3D printing in the UK. He envisions a new wave of innovation that will see more British startups and university spinouts emerging over the next five years.          Siemens’ Manchester HQ hosted the first AMUK Members Forum of 2025. Photo by 3D Printing Industry. What is the current state of additive manufacturing in the UK? According to Dugdale, the 3D printing industry is experiencing a challenging period, driven largely by global economic pressures. “I wouldn’t describe it as underperforming, I’d describe it as flat,” Dugdale said. “The manufacturing sector as a whole is facing significant challenges, and additive manufacturing is no exception.” He pointed to increased competition, a cautious investment climate, and the reluctance of businesses to adopt new technologies due to the economic uncertainty.  Dugdale specifically highlighted the increase in the UK’s National Insurance contribution (NIC) rate for employers, which rose from 13.8% to 15% on April 6, 2025. He noted that many British companies postponed investment decisions ahead of the announcement, reflecting growing caution within the UK manufacturing sector. “With additive manufacturing, people need to be willing to take risks,” added Dugdale. “People are holding off at the moment because the current climate doesn’t favor risk.”  Dugdale remains optimistic about the sector’s long-term potential, arguing that the UK continues to excel in academia and R&D. However, for Dugdale, commercializing that research is where the country must improve before it can stand out on the world stage. This becomes especially clear when compared to countries in North America and Asia, which receive significantly greater financial support. “We’re never going to compete with the US and China, because they have so much more money behind them,” he explained. In a European context, Dugdale believes the UK “is doing quite well.” However, Britain remains below Spain in terms of financial backing and technology adoption. “Spain has a much more mature industry,” Dugdale explained. “Their AM association has been going for 10 years, and it’s clear that their industry is more cohesive and further along. It’s a level of professionalism we can learn from.” While the Iberian country faces similar challenges in standards, supply chain, and visibility, it benefits from a level of cohesion that sets it apart from many other European countries. Dugdale pointed to the Formnext trade show as a clear example of this disparity. He expects the Spanish pavilion to span around 200 square meters and feature ten companies at this year’s event, a “massive” difference compared to the UK’s 36 square meters last year. AMUK’s presence could grow to around 70 square meters at Formnext 2025, but this still lags far behind. Dugdale attributes this gap to government support. “They get more funding. This makes it a lot more attractive for companies to come because there’s less risk for them,” he explained.   Josh Dugdale speaking at the AMUK Members Forum in Manchester. Photo by 3D Printing Industry. 3D printing for UK Defense  As global security concerns grow, the UK government has intensified efforts to bolster its defense capabilities. In this context, 3D printing is emerging as a key enabler. Earlier this year, the Ministry of Defence (MoD) released its first Defence Advanced Manufacturing Strategy, outlining a plan to “embrace 3D printing,” with additive manufacturing expected to play a pivotal role in the UK’s future military operations.  Dugdale identified two key advantages of additive manufacturing for defense: supply chain resilience and frontline production. For the former, he stressed the importance of building localized supply chains to reduce lead times and eliminate dependence on overseas shipments. This capability is crucial for ensuring that military platforms, whether on land, at sea, or in the air, remain operational.  3D printing near the front lines offers advantages for conducting quick repairs and maintaining warfighting capabilities in the field. “If a tank needs to get back off the battlefield, you can print a widget or bracket that’ll hold for just five miles,” Dugdale explained. “It’s not about perfect engineering; it’s about getting the vehicle home.”  The British Army has already adopted containerized 3D printers to test additive manufacturing near the front lines. Last year, British troops deployed metal and polymer 3D printers during Exercise Steadfast Defender, NATO’s largest military exercise since the Cold War. Dubbed Project Bokkr, the additive manufacturing capabilities included XSPEE3D cold spray 3D printer from Australian firm SPEE3D.     Elsewhere in 2024, the British Army participated in Additive Manufacturing Village 2024, a military showcase organized by the European Defence Agency. During the event, UK personnel 3D printed 133 functional parts, including 20 made from metal. They also developed technical data packs (TDPs) for 70 different 3D printable spare parts. The aim was to equip Ukrainian troops with the capability to 3D print military equipment directly at the point of need. Dugdale believes success in the UK defense sector will help drive wider adoption of 3D printing. “Defense will lead the way,” he said, suggesting that military users will build the knowledge base necessary for broader civilian adoption. This could also spur innovation in materials science, an area Dugdale expects to see significant advancements in the coming years.     A British Army operator checks a part 3D printed on SPEE3D’s XSPEE3D Cold Spray 3D printer. Photo via the British Army. Advocating for a “unified industrial strategy” Despite promising growth in defence, Dugdale identified major hurdles that still hinder the widespread adoption of additive manufacturing (AM) in the UK.  A key challenge lies in the significant knowledge gap surrounding the various types of AM and their unique advantages. This gap, he noted, discourages professionals familiar with traditional manufacturing methods like milling and turning from embracing 3D printing. “FDM is not the same as WAAM,” added Dugdale. “Trying to explain that in a very nice, coherent story is not always easy.” Dugdale also raised concerns about the industry’s fragmented nature, especially when it comes to software compatibility and the lack of interoperability between 3D printing systems. “The software is often closed, and different machines don’t always communicate well with each other. That can create fear about locking into the wrong ecosystem too early,” he explained.  For Dugdale, these barriers can only be overcome with a clear industrial strategy for additive manufacturing. He believes the UK Government should develop a unified strategy that defines a clear roadmap for development. This, Dugdale argued, would enable industry players to align their efforts and investments.  The UK has invested over £500 million in AM-related projects over the past decade. However, Dugdale explained that fragmented funding has limited its impact. Instead, the AMUK Chief argues that the UK Government’s strategy should recognize AM as one of “several key enabling technologies,” alongside machine tooling, metrology, and other critical manufacturing tools.  He believes this unified approach could significantly boost the UK’s productivity and fully integrate 3D printing into the wider industrial landscape. “Companies will align themselves with the roadmap, allowing them to grow and mature at the same rate,” Dugdale added. “This will help us to make smarter decisions about how we fund and where we fund.”    AMUK’s roadmap and the future of 3D printing in the UK    When forecasting 3D printing market performance, Dugdale and his team track five key industries: automotive, aerospace, medical, metal goods, and chemical processes. According to Dugdale, these industries are the primary users of machine tools, which makes them crucial indicators of market health. AMUK also relies on 3D printing industry surveys to gauge confidence, helping them to spot trends even when granular data is scarce. By comparing sector performance with survey-based confidence indicators, AMUK builds insights into the future market trajectory. The strong performance of sectors like aerospace and healthcare, which depend heavily on 3D printing, reinforces Dugdale’s confidence in the long-term potential of additive manufacturing. Looking ahead to the second half of 2025, AMUK plans to focus on three primary challenges: supply chain visibility, skills development, and standards. Dugdale explains that these issues remain central to the maturation of the UK’s AM ecosystem. Education will play a key role in these efforts.  AMUK is already running several additive manufacturing upskilling initiatives in schools and universities to build the next generation of 3D printing pioneers. These include pilot projects that introduce 3D printing to Key Stage 3 students (aged 11) and AM university courses that are tailored to industry needs.  In the longer term, Dugdale suggests AMUK could evolve to focus more on addressing specific industry challenges, such as net-zero emissions or automotive light-weighting. This would involve creating specialized working groups that focus on how 3D printing can address specific pressing issues.  Interestingly, Dugdale revealed that AMUK’s success in advancing the UK’s 3D printing industry could eventually lead to the organization being dissolved and reabsorbed into the MTA. This outcome, he explained, would signal that “additive manufacturing has really matured” and is now seen as an integral part of the broader manufacturing ecosystem, rather than a niche technology. Ultimately, Dugdale is optimistic for the future of 3D printing in the UK. He acknowledged that AMUK is still “trying to play catch-up for the last 100 years of machine tool technology.” However, additive manufacturing innovations are set to accelerate. “There’s a lot of exciting research happening in universities, and we need to find ways to help these initiatives gain the funding and visibility they need,” Dugdale urged. As the technology continues to grow, Dugdale believes additive manufacturing will gradually lose its niche status and become a standard tool for manufacturers. “In ten years, we could see a generation of workers who grew up with 3D printers at home,” he told me. “For them, it will just be another technology to use in the workplace, not something to be amazed by.”  With this future in mind, Dugdale’s vision for 3D printing is one of broad adoption, supported by clear strategy and policy, as the technology continues to evolve and integrate into UK industry.  Take the 3DPI Reader Survey — shape the future of AM reporting in under 5 minutes. 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Researchers from the Department of Mechanical Engineering at Virginia Tech have introduced a continuous fiber reinforcement (CFR) deposition tool designed for multi-axis 3D printing, significantly enhancing mechanical performance in composite structures. Led by Kieran D. Beaumont, Joseph R. Kubalak, and Christopher B. Williams, and published in Springer Nature Link, the study demonstrates an 820% improvement in maximum load capacity compared to conventional planar short carbon fiber (SCF) 3D printing methods. This tool integrates three key functions: reliable fiber cutting and re-feeding, in situ fiber volume fraction control, and a slender collision volume to support complex multi-axis toolpaths. The newly developed deposition tool addresses critical challenges in CFR additive manufacturing. It is capable of cutting and re-feeding continuous fibers during travel movements, a function required to create complex geometries without material tearing or print failure. In situ control of fiber volume fraction is also achieved by adjusting the polymer extrusion rate. A slender geometry minimizes collisions between the tool and the printed part during multi-axis movements. The researchers designed the tool to co-extrude a thermoplastic polymer matrix with a continuous carbon fiber (CCF) towpreg. This approach allowed reliable fiber re-feeding after each cut and enabled printing with variable fiber content within a single part. The tool’s slender collision volume supports increased range of motion for the robotic arm used in the experiments, allowing alignment of fibers with three-dimensional load paths in complex structures. The six Degree-of-Freedom Robotic Arm printing a multi-axis geometry from a CFR polymer composite. Photo via Springer Nature Link. Mechanical Testing Confirms Load-Bearing Improvements Mechanical tests evaluated the impact of continuous fiber reinforcement on polylactic acid (PLA) parts. In tensile tests, samples reinforced with continuous carbon fibers achieved a tensile strength of 190.76 MPa and a tensile modulus of 9.98 GPa in the fiber direction. These values compare to 60.31 MPa and 3.01 GPa for neat PLA, and 56.92 MPa and 4.30 GPa for parts containing short carbon fibers. Additional tests assessed intra-layer and inter-layer performance, revealing that the continuous fiber–reinforced material had reduced mechanical properties in these orientations. Compared to neat PLA, intra-layer tensile strength and modulus dropped by 66% and 63%, respectively, and inter-layer strength and modulus decreased by 86% and 60%. Researchers printed curved tensile bar geometries using three methods to evaluate performance in parts with three-dimensional load paths: planar short carbon fiber–reinforced PLA, multi-axis short fiber–reinforced samples, and multi-axis continuous fiber–reinforced composites. The multi-axis short fiber–reinforced parts showed a 41.6% increase in maximum load compared to their planar counterparts. Meanwhile, multi-axis continuous fiber–reinforced parts absorbed loads 8.2 times higher than the planar short fiber–reinforced specimens. Scanning electron microscopy (SEM) images of fracture surfaces revealed fiber pull-out and limited fiber-matrix bonding, particularly in samples with continuous fibers. Schematic illustration of common continuous fiber reinforcement–material extrusion (CFR-MEX) modalities: in situ impregnation, towpreg extrusion, and co-extrusion with towpreg. Photo via Springer Nature Link. To verify the tool’s fiber cutting and re-feeding capability, the researchers printed a 100 × 150 × 3 mm rectangular plaque that required 426 cutting and re-feeding operations across six layers. The deposition tool achieved a 100% success rate, demonstrating reliable cutting and re-feeding without fiber clogging. This reliability is critical for manufacturing complex structures that require frequent travel movements between deposition paths. In situ fiber volume fraction control was validated through printing a rectangular prism sample with varying polymer feed rates, road widths, and layer heights. The fiber volume fractions achieved in different sections of the part were 6.51%, 8.00%, and 9.86%, as measured by cross-sectional microscopy and image analysis. Although lower than some literature reports, the researchers attributed this to the specific combination of tool geometry, polymer-fiber interaction time, and print speed. The tool uses Anisoprint’s CCF towpreg, a pre-impregnated continuous carbon fiber product with a fiber volume fraction of 57% and a diameter of 0.35 mm. 3DXTECH’s black PLA and SCF-PLA filaments were selected to ensure consistent matrix properties and avoid the influence of pigment variations on mechanical testing. The experiments were conducted using an ABB IRB 4600–40/2.55 robotic arm equipped with a tool changer for switching between the CFR-MEX deposition tool and a standard MEX tool with an elongated nozzle for planar prints. Deposition Tool CAD and Assembly. Photo via Springer Nature Link. Context Within Existing Research and Future Directions Continuous fiber reinforcement in additive manufacturing has previously demonstrated significant improvements in part performance, with some studies reporting tensile strengths of up to 650 MPa for PLA composites reinforced with continuous carbon fibers. However, traditional three-axis printing methods restrict fiber orientation to planar directions, limiting these gains to within the XY-plane. Multi-axis 3D printing approaches have demonstrated improved load-bearing capacity in short-fiber reinforced parts. For example, multi-axis printed samples have shown failure loads several times higher than planar-printed counterparts in pressure cap and curved geometry applications. Virginia Tech’s tool integrates multiple functionalities that previous tools in literature could not achieve simultaneously. It combines a polymer feeder based on a dual drive extruder, a fiber cutter and re-feeder assembly, and a co-extrusion hotend with adjustable interaction time for fiber-polymer bonding. A needle-like geometry and external pneumatic cooling pipes reduce the risk of collision with the printed part during multi-axis reorientation. Measured collision volume angles were 56.2° for the full tool and 41.6° for the hotend assembly. Load-extension performance graphs for curved tensile bars. Photo via Springer Nature Link. Despite these advances, the researchers identified challenges related to weak bonding between the fiber and the polymer matrix. SEM images showed limited impregnation of the polymer into the fiber towpreg, with the fiber-matrix interface remaining a key area for future work. The study highlights that optimizing fiber tow sizing and improving the fiber-polymer interaction time during printing could enhance inter-layer and intra-layer performance. The results also suggest that advanced toolpath planning algorithms could further leverage the tool’s ability to align fiber deposition along three-dimensional load paths, improving mechanical performance in functional parts. The publication in Springer Nature Link documents the full design, validation experiments, and mechanical characterization of the CFR-MEX tool. The work adds to a growing body of research on multi-axis additive manufacturing, particularly in combining continuous fiber reinforcement with complex geometries. Take the 3DPI Reader Survey — shape the future of AM reporting in under 5 minutes. Ready to discover who won the 20243D Printing Industry Awards? Subscribe to the 3D Printing Industry newsletter to stay updated with the latest news and insights. Featured photo shows the six Degree-of-Freedom Robotic Arm printing a multi-axis geometry. Photo via Springer Nature Link. Anyer Tenorio Lara Anyer Tenorio Lara is an emerging tech journalist passionate about uncovering the latest advances in technology and innovation. With a sharp eye for detail and a talent for storytelling, Anyer has quickly made a name for himself in the tech community. Anyer's articles aim to make complex subjects accessible and engaging for a broad audience. In addition to his writing, Anyer enjoys participating in industry events and discussions, eager to learn and share knowledge in the dynamic world of technology.

Nature, Published online: 04 June 2025; doi:10.1038/s41586-025-09067-yAcetic acid efficiently depolymerizes aliphatic and aromatic epoxy-amine thermosets used in carbon fibre-reinforced polymers (CFRPs) to yield recoverable monomers and pristine carbon fibres, which, based on process modelling, techno-economic analysis and life cycle assessment, could enable industrial recycling of CFRPs.