Brendon Collecutt, who developed the STEMFIE OpenSCAD library, STEMFIE Roberval balance scales, and a STEMFIE sailcar, recently published an enclosure for N20 DC motors.
You can download the files from this link on Brendon's Thingiverse projects.
This is the official homepage of the STEMFIE Project – the 3D-printable and open-sourced educational construction toy you can download and make at home.
This toy is unsuitable for children under three years due to choking hazards!
.... is made for you!
... is open source.
... is free to use and adapt.
... has no fees!
... is #MadeWithFreeCAD
... is easy to 3D-print
... is upscalable (200% - 500%)
... is lots of STEM fun for kids!
... is ready for you to download