>The difference is that a 3d printer is almost at the domestic use stage and takes up far less space than a CNC Mill and lathe. That's not necessarily true. Th

>The difference is that a 3d printer is almost at the domestic use stage and takes up far less space than a CNC Mill and lathe. That's not necessarily true. There are a plethora of available mills that require a similar skill-set for producing finished working parts. More importantly, the parts you pull off these machines could be used hundreds or thousands of times. I've listed a couple from quick google searches below. http://www.taigtools.com/cmill.html http://www.taigtools.com/cmill.html http://www.pocketnc.com/products/ http://www.pocketnc.com/products/ I was born and raised in a country where firearms are completely illegal. Even there, you would be able to build a higher quality zipgun (which is effectively what a Liberator is) from parts available in a hardware store. The ammunition becomes the most regulated portion of the weapon in either case, and 3D printing as a tech does nothing to change that.