ND filter case for the Dwarf Mini smart telescope.
The model requires 5 magnets sized 3×2 mm (diameter × height). Two magnets are used to secure the ND filter, while the remaining three hold the protective cover in place.

Depending on printer accuracy and material tolerances, the magnets may either press-fit into the holes or require a small amount of glue for secure installation.

Important: check the polarity of magnets before installation.