OB1.4 Dual E3D extruder

I designed a new carriage and extruder setup for the OB1.4 printer to mount dual extruders on the X carriage. So far it looks like it works quite well.

I am using geared stepper motors to drive the filament. They can be bought here: http://www.robotshop.com/geared-bipolar-stepper-motor-3v-233-oz-in.html

The bowden tubing can be bought here: http://seemecnc.com/collections/parts-accesories/products/ptfe-tubing-2mm-id-x-4mm-od

The hobbed filament drive can be found here: http://trinityla