In my experience, fillets in FreeCAD work okay, but are pretty much ground zero for the topological renumbering issues. Put simply, FreeCAD needs a modern geom

In my experience, fillets in FreeCAD work okay, but are pretty much ground zero for the topological renumbering issues. Put simply, FreeCAD needs a modern geometry kernel and there is no such thing in the open source world. Given that OnShape (a bunch of ex-Solidworks honchos) went and licensed Parasolid for their new company, that tells you that developing the geometry kernel was something that they were willing to pay money to avoid.