Hello all, hello Michael.
Rudy here.

Using MOI with great pleasure now, but occasionally I get stuck.
I am trying to create a solid in the shape of a "turkish moon" (see JPG) with rounded, top surface. The bottom can be flat

See the 3dm file attached as well,
any idea, perhaps with a step by step procedure?

In the end, would like to shell the bottom (create a hollow bottom)

Any idea is appreciate it... anyway,
Best,
Rudy