Kinu M47 Classic lid cover

This is a top cover accessory designed for the Kinu M47 Classic grinder.

Due to the M47's open design, coffee beans often jump out during use. While several existing 3D-printed solutions are available online, most still have room for improvement in terms of installation stability or user experience. Based on these observations, I designed this new version.

This model offers a lightweight and streamlined solution: the top cover edge is pressed against the grinder's inner edge for secure fixation and easy removal, while simultaneously avoiding the central shaft to prevent friction or interference. The overall weight is only approximately 3 grams, ensuring minimal impact on the user experience.

To use, gently press the top cover into place along the inner edge of the grinder. As the cover's dimensions are slightly larger than the inner diameter, it will automatically create a slight deformation, securely locking it in position.
No glue or tools are required, and the top cover will not contact the central shaft once installed.

In theory, it should also be compatible with other M47 models, but I only own the Classic version; feedback is welcome if you encounter any issues.