3D Printing Welding Robot Works: This amazing robot is 3D printing in steel. Autodesk gives us a chance to see how the game’s most sophisticated machines are working to build the future using the latest robotics technology available today. That’s the decent thing to do, and it should end there. These machines can’t even tell if a person is close. But we are teaching these machines to understand the world around us and to turn it around as we wish – an incredible achievement.