Students at Rice University have developed an incredibly inexpensive metal 3D printer prototype.
kinetic
Titomic’s Kinetic 3D Printing Process
An Australian company is commercializing an unusual 3D metal printing process.
Converting a CNC into a 3D Metal Printer?
This could be a very big idea: 3D Hybrid Solutions announced a system to convert everyday CNC machines into powerful 3D metal printers.