I printed a dodecahedron today. It printed fine, but plastic was building up on the nozzle.
Why was this? Because the extruder was extruding faster than the build base was moving.
Why is this good? Before, the settings I used worked with my extruder just fine. Now, because plastic is building up, it means that the extruder's motor speed is faster than it was before, meaning that it has become more efficient. This is probably because of the modifications I made to it (especially the filing job I did on the pinch wheel). I modified the Skeinforge settings and am going to print out another dodecahedron momentarily.
I'm so excited!