Gridfinity Simple Box Parametric FreeCAD file

Gridfinity Simple Box Parametric FreeCAD file.

This is a reimplementation of Zack Freedman's Gridfinity basic box using FreeCAD (Realthunder's fork) instead of Fusion 360. See this video for further information about the Gridfinity project by Zack Freedman:

https://www.youtube.com/watch?v=ra_9zU-mnl8