I have built a graber I3 and I can see several advantages of toppie design on 2 fronts: . 1) Probably the most sturdy and best vibration dampening properties out there. 2) Easily creating an enclosure using the frame of the printer - but it needs to be tweaked. I will try this with the SCAD configurator: - The Y platform is flat, so by tweaking the length to cover the whole range of Y motion I could easily build an enclosure around it without additional parts. - The electronics is placed under the printer -- this also helps with the enclosure idea - If instead of triangles on the back a square is used, then a boxy enclosure is even easier If I can find someone to cut the MDF I will give it a try.