One of the greatest benefits of 3D printing technology - the ability to make replacements or parts for household objects like toys, utensils and gadgets - may be denied to US citizens thanks to the granting of a sweeping patent that prevents the printing of unauthorised 3D designs. It has all the makings of the much-maligned digital rights management (DRM) system that prevented copying of Apple iTunes tracks - until it was abandoned as a no-hoper in 2009. More »
