A custom 3D-printed parametric ball bearing is a highly customizable component designed for smooth rotational motion. Parametric design allows users to adjust key dimensions such as diameter, ball size, number of balls, and tolerances to suit specific applications. This bearing could be printed in durable materials like PLA+, PETG, or resin and includes support-free design for easier assembly. Ideal for light-duty applications, it offers a cost-effective solution for prototyping, DIY projects, and educational use.