Thank you, but I still haven't obtained a solid.

> Sorry I thought you want to have a flat bottom part using the blue shape.
Yes, the solid I want is one with a flat bottom. This part will be placed on top of another flat part.

> A solid cut by a curve (by boolean diff) could stay a solid.
The shape I obtained after sweeping was not a solid, but a joined surface. Am I still doing something wrong?



P.S. I want the bottom surface to be flat, so it can be closed with a "plane".
However, the top surface remains open after sweeping, which seems to prevent me from getting a solid.

Well, it's late today, so I'll continue this tomorrow.

marzRX