👉   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.

Browse parts

2023 12 06 STEMFIE online viewer

Check out the STEMFIE web app prototype to browse, view, and download parts (Github).