Yes, Tinkercad is about my level of sophistication -- I know how to use that pretty well. I would swoon if I could figure out a way to "revolve" my creations. Alas, I can not see how. I am hoping someone can point me to a specific piece of software that will do this in a simple fashion. I thought things like Fusion360 were too complex for my simple needs, but I will look into that.
Is they any free software that will allow me to create 3d-printable objects of revolution? I want to start with a curved line or arbitrary plane figure and rotate it about an axis to generate either a shell or a solid.