Sanity is relative. One of the goals is a solar cell production plant design that MetalicaRap will be able to print, that will utilize MetalicaRap's vacuum cha

Sanity is relative. One of the goals is a solar cell production plant design that MetalicaRap will be able to print, that will utilize MetalicaRap's vacuum chamber and beam for the solar cell manufacturing processes. For a typical family home electrical system we may bring the solar cell cost down from 10,000 euro to 400 euro by self printing. (solar cell installation, inverter, and other costs would obviously be on top of this price). It should be possible to use a process that creates thin film solar cells at a vacuum of 10-4 Torr by directly co-evaporating copper, gallium, indium and selenium onto a heated substrate[3]. Other precursor choices should also be possible[4]. The CIGS manufacturing process will consist of electron beam physical vapor deposition[5] (EBPVD summary by material [6]) and DC sputtering in the vacuum chamber(DC sputter animation [7]). http://reprap.org/wiki/MetalicaRap http://reprap.org/wiki/MetalicaRap