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MIT has developed a 3D-printing system capable of producing complex electric machines, including linear motors, in just hours. By integrating multiple materials—conductive and magnetic—into a single automated process, the platform addresses the limitations of traditional manufacturing, which often involves lengthy supply chains.

The system uses a retrofitted printer with four distinct extrusion tools that can print layer by layer with various feedstocks. An electric linear motor was printed in about three hours and demonstrated performance on par with traditional methods.

Material costs for the devices are around 50 cents. This technology could enable on-site production of customized electronic components for applications in robotics, vehicles, and medical devices, potentially reshaping hardware production.