circular cap mesh

Hi folks.
Quick question, I it possible to create a circular cap mesh?
That could be used in a paddling pool without the solid body of water ?

Hey,

Maybe something like this?

This is very useful thanks for sharing this is perfect for now and will help with current project though I need to convert he process to Maya.
But is something like this possible, just the top cap visible?

So im nearly there only I get the sim box rendering. How do I prevent this?

Ahhh, so if you want only the cap, try switching from Isosurface to Cap Mesh mode, but note that the Cutter Geometry there will work on the voxels and will not be precise - the resulting shape might have jagged edges.

In your last post, are you using Mesh mode?