G&C Printer - corexy

The name of the printer is G&C Printer from Good & Cheap Printer.
My goal was to design an printer that was good print quality and was cheap.
The printer use the next corexy mechanism: https://github.com/jand1122/RepRap-XY

specifications of the printer:
All structure is made of aluminium, super rigid, each side was 4 2020 bars.
Z axis all aluminium for rigidity and precision.
Easy to transport.
Support bowden, direct extruder or two direct extruders.
All electronics and core xy mechanism are hidden and protected with printed panels or acrylic panels.
Total Volume: 40x40x52cm
Real print volume: 20x20x27cm
Use 6 endstop, two for each axis.
Hotend E3D v6 little, hotbed up to 110ºC
Ramp 1.4, mega 256, 1/32 steppers, big LCD with SD card support

I have added extras that are not included in the BOM file:
Light LED
Button on/off with green light
two filament support with bearings and M8 screw
passive colling for the x,y
second E3D V6