The free and never-ending 3D-printable educational construction-set toy you can download and make at home!

New version of the STEMFIE spanner tool

The classic STEMFIE spanner tool just got updated, giving it new features to grip threaded fasteners. Check out the video below and download the latest version from this link.

 

 Spanner Nut SPN TOL 0004 category assembly 2 stemfie.org

Spanner Nut SPN TOL 0004 FreeCAD topSpanner Nut SPN TOL 0004 FreeCAD bottom

Welcome!

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. 

STEMFIE ...

.... 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

Quick-print sample

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

☞ Warning!

Warning Choking Hazard Children Small PartsThis toy is unsuitable for children under three years due to choking hazards! 

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