Or workbench. Maybe that would be more sensible, because there’s going to be swarf everywhere.

The guy who made a big noise with his 3D printed gun parts is back, with a, relatively, cheap home milling machine designed specifically to make lower receivers for home assembled AR-15 assault rifles. The process is made easier by American companies which will sell you an 80% complete lower receiver, so that the machine only has to do the last drilling and cutting. The serial number free result is known as a “Ghost gun”. It’s all some sort of libertarian exercise, the designer claims.

From a technological and DIY point of view, this is fascinating, but what is it with American libertarians and guns? Why not create something that isn’t destructive?