I think it makes a big difference wether we’re talking about some simple mechanical part without a lot of aesthetic requirements - then i think the Fusion360 Solution is a nice result for very little effort.
(and bettern then just ending with a hole / gap as rhino s _filletEdge)
if we re talking about a highly aesthetic part - let s say a watch - then the design of the surfaces should already be aware of the fillet.
with this in mind - this is my favourite solution:
the violett fillet is used to reposition the blue surface.
with this, the green fillet will become a branch of the violett one…
L45_2023-00.3dm (3.2 MB)