UPDATE: This design has been superseded by my newer version, http://www.thingiverse.com/thing:213946, which has better pins. I highly recommend you print that instead, as it prints more reliably, assembles much easier and holds together better.
I figured it was high time I updated my cube gears to use my newer pin library, and while I'm at it, why not make it customizable? The new pins fit in much easier than before, and if you have any trouble, you can change the tolerance and get new pins from the customizer app.
This cube gear has different numbers of teeth than my original, which means you have to turn it more to get back to a cube. The customizer also has the original gearing as an option, as well as one with fewer teeth (good for making it small).
I also put in the ability to put words on the faces of the large gears. This way you can make a personal gift, or maybe a silly game where different word pairs come together as you turn the cube. I'd like to see what you come up with.
Print the plate (it fits on a Replicator bed), or print one center, four large gears, four small gears and eight pins. Assemble and turn! I've found a little grease on the pins helps a lot, especially with PLA.
When you open customizer, you're given a choice of what part to render, in case all you need is a new pin or a large gear with words on it. If you want to make an all new cube gear, just make an stl of each of the four parts. The assembly is just there so you can see how it will look; there's no point in exporting it.