Extruder visualizer rotation indicator for 5  45 mm shaft
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Extruder visualizer (rotation indicator) for 5 / 4.5 mm shaft

So I wanted one on my Kossel So I made one You can have it too With sources if you need some times onshape wont let you to ...

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Extruder visualizer (rotation indicator) for 5 / 4.5 mm shaft alternatives