Simple dice cup

### (Psst, hey, read the Print Settings section before printing!) ###

I have been designing custom dice lately, and I needed a consistent way to shuffle and throw them when testing the designs for fairness. I therefore designed this dice cup using a modified version of mathgrrl's [Customisable Polybowl generator](http://www.thingiverse.com/thing:988598). This design is nice because:

1. You can control the thickness of the walls and base using your slicer settings.
2. Dice get shuffled really well just from hitting the angled sides.
3. The cup narrows at the top so that your dice are less likely to jump out during shaking.
4. The narrow exit also tends to make the dice hit each other as they exit, making things even more random!

If you use this dice cup by holding it vertically and shaking it, you can shuffle 4 dice very efficiently. If you put your hand over the opening and shake it upside-down, you can shuffle up to 10.

(The numbered dice in the photo are my d0-5 and d1