I want to start off and say **Newb Alert**. I am just now getting the hang of my not-so-very-accurate-assembly-manual-included tevo tarantula as my first 3D Printer. I have wanted to have several printers and from what I am seeing building them (based on modified versions here and on repraps site) is the way to go. I am working with limited space in my apartment and really just wanted some opinions. I am a huge tech nerd and work with rackmount servers and though "hmm, why can't I do a rackmount of printers?" Now that some of the background is out of the way my question is this: What are your opinions on simply getting some 20-4040 aluminum frames (say 1500mm) and building a few small printers one on top the other(my needs are small so they don't have to be super tall ones)? I plan to do a bowden setup using the diamond extruder (3 color mixing print head). would the printers all moving cause extra, even too much vibrations? If so would maybe a wall and floor bracket help mitigate that? I am also a programmer so I can make plugins for repetier to allow for multi-printer jobs and such and know what boards and drivers to use so I am good there.