Today every engineer, maker, and tinkerer can get access to a decent 3D printer for less than 300$ and start creating. While industrial robotic arms are too expensive only alternative are DIY robotic arms that are in most cases not really easy to program, they are not safe, or capable of doing useful tasks.
CM6 is a robotic arm that could fill that gap. It is safe, compliant, and most of all cheap. CM6 is a 3D printable COBOT robotic arm that uses QDD (Quasi direct drive actuators). QDD gives CM6 passive compliance which makes it behave like a human arm.