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.