Hi Rachel, also a different way to generate your curves from your base solid is to draw a line and then replicate it using the Transform > Array > Dir command so you have a set of lines, then select the lines and run Construct > Curve > Project to project those lines onto the solid. The result will be planar section cut curves through your solid.

The arrangement of lines would look like this example here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=4295.3

- Michael