I am ‘reheating’ this topic with good suggestions from @Holo, especially would be great to have per-object override so some objects can ignore clipping by ClippingPlanes (a checkbox in ObjectProperties, perhaps?)
Another way would be to exclude objects from clipping per-Clippingplane, but UI for that is less straight-forward.
I have one more to add to the pile for ClippingPlanes and curious if this is as ‘easy’ as it sounds: how about a command: ExtractClippedMesh, that would basically extract the rendermesh used to display clipped geometry in the viewport?
@jeff - is that information available as 3D geometry to extract?
Many times when working with 3D sections we would find this very helpful to extract the clipped geometry as a real model with no need for clipping plane. I realize that getting the 3D Surfaces and Polysurfaces may require much more work to physically clip, but maybe at least render-mesh version would be quickly available?