Anet a2 dual extruder E3Dv6 plus sensor mount

This is a dual extruder for anet a2. It includes the x plate carriage with a sensor mount. I also include a dual fan duct.
You will need :
- A set of different sizes m3 bolt and m3 nuts
- 2 E3dv6 extruders
- 2 40mm fans
- 2 30mm fans
- 1 sensor for autoleveling
- 1 additional stepper motor, tubes....

There is anough tolerance to adjust manually the extruders height.
I printed the x carriage at 100% infill.
You can't screw the fourth bolt behind fan duct but it still stay in place.