i3v X Carriage and Fan shroud

This is a replacement i3v X Carriage and fan shroud for the MakerFarm i3v. One is a direct replacement, the no eccentric one removes the x carriage eccentric for a sliding mount instead. The no eccentric mount is superior and is the one I suggest you use. This new carriage supports auto bed leveling, the Hexagon and the Pico hotends (the pico is 20mm longer) has a mount in the back for LED lighting and lots of room for airflow from high CFM cooling fans. The overall design is a single piece a