Is there a modeling formula for loosening edges?

Is there a modeling formula for loosening edges?
No matter how hard you try, it’s difficult.

If you have any know-how, please let me know!

if you want a fast and easy G1 solution:

do the red fillet first.
the dark green last.
check for “pointy fillet” workflows.
(this might not work with _filletEdge, use _filletSrf _trim _join instead)

this might also be a start to quadremesh and convert to subD for fast design sketches.

other fast and easy approaches might be the usage of patch command or xnurbs plug-in.

check for keywords “5 sided hole” and “cv massage” to get a starting point for more advanced patch layouts / techniques.

maybe give more info about the usage of the data (early design, prototyping, final mold / production) and your cad-knowledge. And maybe upload a file that already gives some initial surfaces - with the challenging transition missing.

hope this helps - kind regards -tom

I don’t love it but some arrangement like this may do-

-Pascal

Thank you for providing a great solution.
Can you please upload your initial work data?
I’d like to backtrack and check.

Thank you for providing a great solution.