Well done!
3D Printer - Big Size
Build in '3D PRINTER BUILDS' published by AK-Creation, Feb 14, 2014.
I creat a open source 3D Printer to print big things. Print size: 400x500x300 mm. You can download the Drawing in PDF and in Inventor 2013 format. The unwinding drawings are also included. I take some detail photos for a better understanding.