English instructions - Parts list Printing part: sphere*2, central axis*1 (you can print a few more for backup) Purchase part: Commonly used bearings for yo-yos (UR188 bearings) and stickers (outer diameter 19mm) The bottom bracket may need some light grinding to get the balls and bearings to snap into place Recommended parameters: ***The opening part in the center of the sphere needs support, only the protruding part of the opening can be added*** Sphere: filled more than 80%, recommended 85%-90% Bottom bracket: 100% filled, using the strongest possible consumables

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