If I rewind time back to the early eighties when I was just about to leave school and I was messing about with my newly acquired ZX80 the younger me would have not imagined that the older me would have access to, the tools, and the knowledge to create 3d parametric models. Then with a couple of presses of a button, send (for that time an unimaginably huge) file to someone who could then turn that information into a physical object using a 3d printer.