More on 3-D Printing and Copyright
3D printing is a tool and, like any tool, can be used for productive and not-so-productive purposes. Making unauthorized copies of physical objects protected by copyright is copyright infringement, whether those copies are made with a 3D printer or a whittling knife.
A nice (and dense) little overview of copyright law and 3-D printing. Even covers useful and “creative” objects.
Via Public Knowledge.