Printed auger assembly from odwdinc, then a stand, attachment for the stepper motor, and a hopper. Run by an Arduino/RAMPS1.4 combination with simplified firmware, in a RAMPS enclosure: http://www.thingiverse.com/thing:291001
Glued using Duco model cement - seems to work pretty well. Hopper is removable.
Different parts need different support/adhesion strategies. Rafts were useful for the tall, hollow pieces like the hopper and the RAMPS enclosure.