BCN3D+ Dual independent extruder

This is a performance of a BCN3D+ single extruder to dual independent extruder.
You will need:
-screews from original design for mounting this mod
-Arduino DUE + RADDS 1.5
-nema 17 for the 2nd X axis
-gt2 20 teeth pulley
-gt2 belt for both x carriage
-another full X carrige (4x LM8 linear bearings, hotend, extruder motor,...), you can print the carriage plate. (next mod will use bowden and smaller carriage)
-Arduino 1.5.5 software
-8x LM8 linear bearings
-1x endstop more
-Another spoo