Graber i3 PSU Holder http://reprappr.blogspot.com.br/2014/07/graber-i3-ps-on-com-fonte-industrial.html My Graber http://www.thingiverse.com/thing:182675 Graber i3 - PS-ON with industrial source In my Graber i3 operation of the power is controlled by Ramps 1.4, through pin PS-ON. How to call "industrial" source does not have the same start one pin ATX power supply, it was necessary to adapt a relay to serve that purpose. This here is the case I made to house all the electronics. I had to draw another one, because my source has only one hand to hold the screws. This blue color was the first version, I remade the impression and changed all parts by brown, similar to the color of the MDF, but how does not matter, this picture will serve. I will not pass the file of this case, because it is very specific, and do not advise anyone to buy fountain with screws one side only, as I did. Normal operation (without PC):