My latest Guardian column is "3D printed guns are going to create big legal precedents," and it looks at an underappreciated risk from 3D printed guns: that courts will be so freaked out by the idea of 3D printed guns that they'll issue reactionary decisions that are bad for the health of the Internet and its users:

More interesting is the destiny of the files describing 3D printed guns. These model-files have been temporarily removed from the internet at the behest of the US State Department,...