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

The classic STEMFIE spanner tool has been revised and is now available for download. It has new features as described below.

  • A 2BU ruler on the bottom and sides surfaces to measure block units (BU) divided into halves and quarters.
  • Wider waist measuring precisely 1BU (12.5 mm)
  • The gripping centers and the threaded hole are now located at evenly spaced block units.

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.