This is the second version. The first version can be seen here: http://helioslabs.blogspot.com/2014/12/3d-printed-auto-fish-feeder.html
The first version was very flimsy and required heavy modification (sanding, cutting, gluing of all parts). In all, it worked but just barely. This new design's auger is better suited for pushing out fine grain fish food and the thicker construction made it easy to install the 2mm screws needed to fit it together.
Using the low resolution on MakerBot's Replicator 2, produced decent results, but for example, the t-slots for the arms needed to be forced in a bit (very carefully). The auger also required a little modification to fit with the servo.