You can optimise the process alternating the sphere edges lineary to simplify the jonctions.
Then doing boolean as usually and then you could maximalize filet.
I use next the flow.

The smooth is maximal and Blobby is here...

When possible using Flow like Phiro writes above can be very helpful because it can be a lot easier to build an initially straight and uniform piece. Then deform it into your final shape.

- Michael

@phiro: "You can optimise the process >alternating the sphere< edges lineary to simplify the jonctions."
???

In fact, if edges are not in junctions zone or are in simply relation perpendiculary, the filet could be bigger.


Added, a test of rendering... Blobby ring rendering... MOI3D modeler and OWLET renderer.





Thanks to PILOU for finding OWLET, this render software is easy and gives spendid pictures...

Owlet: It's not me! ;)

Last times I see it, it was here! ;)

https://moi3d.com/forum/index.php?webtag=MOI&msg=9275.5

and the first time in the forum here

https://moi3d.com/forum/index.php?webtag=MOI&msg=8034.1