Sweep ellipse

 From:  Don (DWILLIAMS56)
8633.1 
Hi there,

I am trying to create an oval shaped bowl to be cut on a CNC router.

I tried sweeping a shape around an ellipse but if the bottom goes beyond the half way point of the ellipse the created surface goes wonky.
A circle works OK.

How can I create an oval shaped bowl with slanted sides and a bottom that I can export?

Thanks,
Don