I remember an On/Off Controller in 3DSMax which I have never used, and tried to use it with the Slice On checkbox for a Sphere primitive. I couldn’t find the Slice On checkbox as an animatable parameter in Curve Editor.
I have already created some slice animations on a number of spheres, assuming I can turn them all to a full sphere, but as you might imagine my slice cut is always visible.
Is the slice on/off checkbox not animatable?