waddafaaak-- #FreeCAD

So I'm doing a bearing. Have 2-part cage, with common Bodies, inherited with SubShapeBinder, (which also needs to be made solid with Boolean Fuse ok).

HOWEVER, the #SubShapeBinder is not freely editable: it needs to be created/inserted at the tip of the Body hierarchy.

Result: child Bodies cannot be updated, alas, because the topology breaks

WORKAROUND

Create dedicated minimal Bodies for SubShapeBinder+Boolean Fuse only stuff. This eases their recreation on change.