Can 3D Printing Lead to Mass Manufacturing?

Industrial scale 3D printers have for a long time now threatened to change the face of traditional assembly line manufacturing, but it hasn’t really kicked-off the revolution yet. The greatest known limitation of additive manufacturing is its inability to mass-produce. To replace the millions of parts manufactured daily in an assembly line in a factory in China by additive manufacturing would mean installing vast numbers of industrial scale 3D printers that would demand astronomical capital investments that would not be economically competitive.