This large mechanical spinning top (120mm diameter, 50mm height) is designed to spin by pulling a rack gear. Optimized for 3D printing, it provides smooth operation and fun interaction, making it ideal for makers, 3D printing enthusiasts, and educational projects.

• Easy to print – No supports required.
• Functional gear system – Rack and pinion mechanism for spinning action.
• Large size – 120mm diameter for longer spin time and stability.
• Great for STEM learning – Demonstrates mechanics and kinematics principles.

Compatible with FDM and SLA printers, best printed in PLA, PETG, or ABS for durability.

Includes STL and 3MF files – Ready for slicing and printing!