Reuse parts fully parametrically in FreeCAD

With FreeCAD, and the Assembly V4 workbench one can reuse already created parametric parts in full. This video demonstrates having 3 documents: 'assembly', 'part' and 'sub-part' where the 'part' build upon the sub-part and the assembly showing 2 variants of the 'part'.
Features used:
- Assembly
- Variables
- Parts
- Body
- Shape binder
- Base feature
- Sketch with circle constraint
- Padding of the sketch.
Know you can speed up the playback of the video. I think 1.5 x will do 😊.
Many thanks to creators of FreeCAD, the Assembly V4 workbench and OBS for the video recording.