Back when 3D printers were brand-new, I was at a college event where the Engineering Club had one on display. I stopped to watch it, and spoke with the kid who had built it. He was a Freshman, and had built it during the previous summer, because he wanted to come to college and make an instant splash in the Engineering Department. He certainly succeeded, because he was the one in the booth that everybody wanted to talk to, while the upperclassmen that hadn't accomplished anything, sat in the back of the booth and glowered at the Freshman upstart. So anyway, if they ban them, we'll just build them.