👉   Play freely and build endless fun at home with STEMFIE, the free 3D-printable educational toy   👈 

One of the STEMFIE goals is to integrate non-printed components with 3D-printed parts, making it possible to create extensive builds containing motors, electronics, and commonly available mechanical parts.

This image shows an early attempt to make a 3D-printed bearing housing for the 608 standards. I chose this bearing size because it is commonly available in stores and is already around us in droves since it is the central bearing in most fidget spinners.

So, if you have retired fidget spinners in your drawers (probably yes!), you can poke the bearing out and give this STEMFIE 608 bearing housing prototype a try. You can download and 3D-print the 3mf file here. Note that the retaining ring for holding the bearing in place is a short piece of 1.75 mm filament.

I welcome This email address is being protected from spambots. You need JavaScript enabled to view it. regarding your tests and suggestions on integrating 608 ball bearings into the STEMFIE standard. I will publish all versions of the bearing housing files soon.


STEMFIE.org 608 Ball Bearing Housing prototype


Quick-print sample

STEMFIE.org Quick print sample shoulder screw pin nut washers brace

The STEMFIE Quick-print Sample file is an easy way to test a few STEMFIE parts and fasteners. You can also check the STEMFIE Calibration File for more elaborate types of fasteners.



STEMFIE is a free, open-source, 3D-printable construction set toy that helps children learn STEM! Download the files freely, and please support my efforts to expand this project.