Mostly Printed 3D Printer Optimized to Print ABS

Newer version using belts: https://www.thingiverse.com/thing:2387735

Mostly Printed 3D Printer Optimized to Print ABS. The XY mechanism is of my own devising and as far as I can find it is brand new. It is a combination of ideas taken from the Ultimaker gantry and Richard Horne's Sli3dr Printer but I believe better and simpler than either.

3D Printer Features:
Features Genuine E3D V6 hotend and graphic controller at $350 price point.
Modular construction. Size can be adjusted by adding or removing modules.
More area inside printer is usable as print area compared to many other designs.
All motors outside of build area to allow heated chamber.
Integrated cable management for clean look.
Nearly all parts 3D printed, easily enclosed for printing ABS.
Innovative XY mechanism with excellent accuracy and low parts cost.
XY can use belts or filament and round or other linear rails (this version uses filament and round rails).
Can use bowden or direct extruder (this version u