Download and use the following files as templates to create your STEMFIE parts and projects. (Right-click and choose: "Save as")
Blender - FreeCAD - OpenSCAD - Tinkercad
Blender is a free, open-source 3D-creation suite for 3D modeling, rendering, and animation.
FreeCAD is an open-source general-purpose parametric 3D CAD modeler.
OpenSCAD is a 3D compiler that reads a script file describing the object and then renders the 3D model.
Tinkercad Tinkercad is a free, online 3D modeling program in a web browser.