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How will mobile 3D printing change the future?

363 Published by admin Jul 29,2019

GXN Innovation, the independent research arm of the Danish construction company 3XN, has launched a new initiative called “Break the Grid” to explore how 3D printers move automatically during 3D printing.

The aim of the study is to develop more effective ways to cope with urban, social and environmental changes.By modifying 3D printers to move automatically, the design partners hope to address the global challenges of population growth and climate change, which threaten buildings, infrastructure and cities around the world. 

“By enabling 3d-printed robots to crawl, swim and fly, we can address pressing environmental threats around the world at lower cost and with greater efficiency,” explained GXN founder Kasper Jensen.

Break the Grid is also part of Danish AM Hub’s Moonshots initiative, which supports projects that aim to push the limits of 3D printing to create a better world.

3D printing

Saving the future using 3D printing

GXN, established in 2007 by 3XN, seeks to create new approaches to environmentally beneficial design while pushing the boundaries of architecture. The Danish AM Hub is supporting GXN in order to carry out its own goals, which revolves around providing advice on additive manufacturing to the Danish ecosystem, with the aim of getting industry to see the multifaceted potential of 3D printing.

The foundation of the Break the Grid project is based on three scenarios presenting global challenges where autonomous additive manufacturing would be crucial. Members of the research team envisioned a near future where technological advances in robotics and machine learning have mobilized 3D printers to move autonomously through our environments to solve these challenges. Then, the team created mobile mechanical prototypes of 3D printers using existing sensing and printing technology. With the prototypes, different virtual hacks were explored to enable mobile 3D printing on land, underwater and in the air.

3D printing

The first global challenge proposed by the project addresses the deterioration of global infrastructure. Specifically, it targets micro-cracks; a starting point for further damage in concrete structures. Water and oxygen can enter the cracks and corrode the concrete construction. To respond to this scenario, the project team hypothesize that 3D printers can use a porous filler mix to repair the micro-cracks. The filler would be mixed with a fungus called ‘Trichoderma Reesei’, which enables the formation of calcium carbonate. This is useful as calcium carbonate is often used in industrial settings to neutralize acidic conditions in both soil and water, and can therefore prevent corrosion. Autonomous hexapods equipped with the 3D printer would scout urban and remote concrete infrastructures, identifying micro-cracks to repair before further damage can occur.

A second global challenge centers around the damage caused by climate change on coastal habitats. It is said that over 10 percent of coastal populations live less than 10 meters above sea level. They are considered increasingly vulnerable to coastal storms and tsunamis. The researchers developed a synthetic glue with the same properties of a specialized adhesive produced by oysters. Break the Grid considers whether 3D printing ROVs could go underwater to mix the glue with ocean floor sands. This would create a wet-setting binder, that can be used to 3D print artificial reef structures in order to protect the coasts while also providing habitats for marine life.

3D printing

The final global challenge attempts to deal with the heat and energy loss resulting from decaying high-rise buildings in major cities. Many of these building’s facades require repair or better insulation, in order to prevent further degradation and escaping heat. To create new thermal insulation for the old buildings, the research team are exploring the use of functionally graded materials by combining glass with high-performing polymers. In order to apply the insulation, the Break the Grid team conceived a drone-based 3D printing system to identify and fill thermal bridges in the older high-rise buildings. This would allow for lower costs due to reduced labour and less human interaction, leading to an efficient material-based solution.

“Converging technologies are enabling new approaches to construction,” commented Mads Kjøller Damkjær, CEO of The Danish AM Hub Fund. “We hope to inspire the additive manufacturing industry to envision new possibilities, which will require combining design and technology to shift our values and our current ways of thinking.”

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