How to add draft along the red coloured edge which is marked in red of the below attachment?

Can anyone help me to add draft along the red coloured edge?

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6 Answers

This is not an easy task. Some questions:
1. what is the draft value you plan to add?
2. how do you like to draft, maintain each diameter at PL and make inner one smaller? OR , enlarge diameter at PL?

I suspect you may not be able to use revolve. But it depends.

 
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See the attached file, is this something you want? Note that there is still no draft on the flat surface.

 
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Thank you, sir, for your response. I think I didn't clearly mention what I want, I'm attaching a file of what is in need but i couldn't control draft angle as i have just projected the sketch onto another plane and used blend option

 
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can't really tell what you wanted to do from this file. You added 30 MM material surrounding the cavity and that creates more undercut on the cavity.

 
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