material elimination on part in revolution sheet

[Tuli]

Hello.
I have a problem with modeling a part of the sheet that I can't fix. . .
basically, I should make a revolution on the part by eliminating material.
Unfortunately the option eliminates material is not available by making a revolution on a sheet.
I also tried to make the revolution before converting the part into sheet metal, but doing so I can no longer convert the part.
to be clearer, please attach the model in question.
In practice I should use the sketch called "cut" with the axis called "cutting" to remove material from the side.

Can someone help me?
thanks for the attention.

 

[Tuli]

place as I solved in case it can be useful to others in the future.
the profile of the cut did not correctly intersect the part and generated some "faces" of which I did not notice.
I then adjusted the profile, made the revolution before converting the sheet metal object and reduced the sheet thickness that was too high.
It's okay now.