emmets Gear Bearing modified

**Update: checkout my own alternative design:
"Customizable Planetary Gearset (Cycloidical)" http://www.thingiverse.com/thing:488993**

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This is a slight modification to emmets gear bearing that makes it post assemblable.

Advantages:
1) Zero clearance possible
2) Multicolor with single nozzle printer possible
3) Seperate prints -> no travell moves -> better surface quality

**edit:** Don't use zero clearance (the *stl's have), increase the tol parameter to at least 0.3mm so the parts can be put together.