Wombot E3D Titan extruder carriage

E3D Titan extruder carriage mount for my Wombot. Due to the 3:1 gearing you can use a lot smaller (and lighter) stepper motor and still have as much or more torque as typical large MK8 extruder stepper. The filament path gives good support for flexible filament.
See my other design for the BLTouch mount with the titan. http://www.thingiverse.com/thing:1543232