Makerfarm I3v Bowden X Carriage

This is my upgraded X carriage for my Makerfarm i3v with a Bowden/Hexagon setup. It is to be used with a bowden filament feeder like this made by Tech 2 C (http://www.thingiverse.com/thing:767951).

I designed the X carriage so that the view of hot end and nozzle is unobstructed by fans. The fan now draws cool air from top of carriage and out through the front. This is an improvement of the stock carriage where the air is blown into an area below the carriage. I was also getting fed up of not