⚙️ More than a calendar—it's a machine you can interact with every day. 

This hand-cranked mechanical flip calendar brings the charm of classic mechanisms to your desktop. Simply rotate the side knob and watch the numbers flip into place through a cleverly engineered mechanical system. 

Featuring a retro cassette-inspired design, it serves as both a practical calendar and a unique conversation piece. No batteries, no screens—just pure mechanical satisfaction. Whether displayed on a desk, shelf, or workshop bench, it's a must-have for 3D printing enthusiasts, makers, and anyone who loves beautifully functional designs.