The development of this 3D-printed mechanical marble clock became a highly complex technical challenge. The project tested design precision, material tolerances, and the limits of 3D printing applied to functional mechanical systems. Throughout the process, multiple large-scale components had to be redesigned and reprinted due to friction issues, misalignments, and blockages along the rails. Each adjustment required hours of manual calibration, fine sanding, and physical testing to ensure a constant and stable flow of marbles. Although the creator acknowledged that the initial effort was underestimated, the mechanical lifting system and gravity-driven circuit are now operating smoothly and reliably. The next step is the design of the marble selector, a key component that will elevate the project into an integrated, efficient, and visually striking mechanical system. • Follow @artificialntellligence for more content on AI and technology. #engineering #3dprinting #mechanicaldesign