Although they're still far from being common, 3D-printed metal bicycle frames do now exist. Usually they're made using a sintering process, in which a laser is utilized to selectively melt steel powder, building it up in successive layers. Now, however, a team of students at the Delft University of Technology (TU Delft) in the Netherlands has taken another approach – they've created the world's first stainless steel bike made via a welding-based 3D-printing technique.
ESA astronaut Andreas Mogensen has successfully driven and manipulated an Earth-based rover whilst orbiting at a height of 400 km (249 miles) aboard the International Space Station (ISS). The control system used a sophisticated form of force-feedback that allowed Mogensen to determine when the rover's robotic arm met resistance. The technology has the potential to be used in a number of roles both in space and back on Earth, possibly taking human workers out of harms way.