Crédits:
Using my Printrbot Simple Metal, I 3D printed a 'working' Stargate using a design
found here: http://www.thingiverse.com/thing:39976
with some modifications I made to incorporate an Arduino and a stepper motor.
I still need to tweak the dialing program to get the symbols to line up properly with the chevrons, but quite pleased with how its turned out!
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I've since made my remix of the Working Stargate available on Thingiverse, including the modified 3D model files I altered to allow for the electronics to be mounted, and the Arduino sketch that drives the project.
if you're interested all the files are available here: http://www.thingiverse.com/thing:571853 along with a detailed instructions write up with a parts list.