New 3D technology allows for precision printing on a nanoscale. In a process called two-photon lithography, tiny structures on a nanometer scale can be printed. Using a liquid resin hardened by a laser beam, the printer can create structures as little as a hundred nanometers in width.
The marriage of computers and manufacturing is rapidly moving us towards mass customization. Called fabbing, digital fabrication is becoming rapidly affordable and doable. We are not far away from the replicators of Star Trek here in the 21st century.