9g Servo arms, different couplers to 5mm threaded rod WIP

Thingiverse is great. With flouSH's part I did not have to start from scratch. Unfortunately the PP3DP UP has different tolerances and print properties, the first ones where to loose and the teeth did not turn out well.
There you have a great example for reprap/slic3r VS closed source: While the later will usually produce great and repeatable results, there's just not much you can do when something just won't work with the limited settings available.

By the way, in the Sketchup SKP file is