Planetary Gears Finger Fidget Spinner – 3D Printed Mechanical Stress Toy

Spin with science! This 3D printed planetary gear fidget spinner isn't just satisfying — it's genius. Watch interlocking gears rotate in harmony as you spin the central hub. Designed for engineers, students, or anyone who finds peace in motion, it's a perfect blend of tactile fun and mechanical elegance.

⚙️ When fidgeting meets physics.

🎓 Great STEM gift, desk toy, or conversation starter.