UPDATE

Added the ability to specify that the magnet holders are outside of the box and that they are either full height or partial height (partial meaning just tall enough to hold the magnet). For the outside magnet holders, you will need to use supports.
Also includes other misc enhancements/fixes.

ORIGINAL

I saw a magnetic box online and thought to myself that I would like one of a different size. Instead of pulling their model into some app to make changes, I thought I may as well try my hand at OpenSCAD to build it myself. I came up with this magnet box that is fairly customizable.

The models included are rendered for magnets that are 6x3 mm magnets.

You can use a piece of filament as the "rod" to hold the hinge together.

You may need to adjust the tolerances depending on your 3D printer.

Enjoy!