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

Here is a new STEMFIE fastener! Meet the socket-retaining ring, designed to lock #Stemfie3D parts axially on a shaft. The final version will be released soon. In the meantime, you can download the FreeCAD and 3D printing file and try it out. 


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.