Over the past few weeks I’ve been working on a project for MakerBot Industries; a Bowden-style filament drive mechanism and filament box.
Removing the small cover reveals the drive mechanism and controller board. The drive mechanism is a derivative of the Paxtruder.
Looking inside we can see one of the two brackets holding the shaft in place. I made the filament reel from cardboard. The MakerBot filament will probably ship with a different reel.