Parametric battery dispenser

CHEP showed a battery holder in his video https://www.youtube.com/watch?v=0ovExBLChKU
That is Thingiverse thing https://www.thingiverse.com/thing:310472
FreeCAD is a free software parametric CAD program https://www.freecadweb.org/

I decided to redraw it in FreeCAD, such that I can tweak the parameters for different cell sizes, printer properties etc, and understand why each feature was there in the first place. I am not skilled at FreeCAD, and so the design process is slow and bumbling, but in the end does work.