Parametric Flashcard Box 60×90 mm — Kid Friendly Magnetic Lid

This is a child-friendly parametric flashcard box designed for 60 × 90 mm cards.

I designed it for a set of children’s learning cards that needed a simple, practical storage box. The main goal was to make the box easy to open and close for a 3-year-old child, while still keeping the cards neatly stored.

The lid is intentionally not a tight friction-fit design. Instead, it uses a loose fit with optional 5 × 2 mm magnets, so it can be opened without much force. The box has finger cutouts for easier card access and a large pull tab on the lid.

The model is fully parametric and created in OpenSCAD. You can easily adjust the card size, stack height, clearance, wall thickness, lid fit, and magnet dimensions.

Default dimensions:

- Card size: 60 × 90 mm

- Card stack height: 40 mm

- Magnet size: 5 × 2 mm

- Card clearance: 2 mm

- Separate base and lid parts

Features:

- Easy-to-open magnetic lid

- Loose child-friendly fit

- Large pull tab / handle on the lid

- Finger cutouts for easier card access

- Optional magnetic closure

- 4 magnet pockets in the base and 4 magnet pockets inside the lid

- Rounded corners

- Fully parametric OpenSCAD source included

Printing notes:

- Print the base and lid separately

- No supports should be needed

- PLA or PETG should work fine

- Recommended layer height: 0.2 mm

- Recommended infill: 15–25%

- Recommended walls/perimeters: 3

- Test the magnet fit before gluing

Important safety note:

Small magnets can be dangerous if swallowed. If this box is used by a small child, glue the magnets very securely, preferably with epoxy, and make sure they cannot be removed. You can also print and use the box without installing magnets.

This model was designed as a practical storage box for children’s flashcards, not as a tight deck box for trading cards. The priority is easy handling, simple opening, and quick access to the cards.