Pilou - Thanks for demonstrating the Rail Revolve.

I don't know if Rail Revolve is intended for this application, but in some ways it works better than fillet because it seems to work in tight V shape corners.

However I tried it on a similar shape and also got a result where the profile curve cuts into the shape in some areas (see red arrow) in your example.

Do you know how to get the profile to work in this situation?

Ed