funnel with extrusion and cutting

[genesis1975]

Hello everyone,
I have to make a funnel in the attached lever not flat; on the one hand I did the extrusion then cut where necessary, but on the other hand I find myself in difficulty in doing the return so that it is equal in depth along the whole lever... can you do according to you?

 

[MassiVonWeizen]

make a cut with the same logic of the creation of the sheet, then with a sketch on the front and then fitting the ends

 

[genesis1975]

Thank you very much for the suggestion.