Extruder Visualizer - Googley Eye - Smileys

These little joyful friends watch over your print for you and visualize the extruder movement.

The googly eyes used are 8mm in diameter.

I have designed the visualizer to be a press-fit for the Creality Sprite Extruder, but i think most similar sized stepper motors should have the same shaft diameter. (5mm)

For the 2 layerd colour change i can recommend printing the smileys face down;

0.8mm → 4 layers with 0.2mm layer height, is the thickness of the black layer.

I had some trouble with pausing the print with cura, i can recommend the following video: