[chimerax-users] Viewing ccp4 volume data - Hiding outline box volume outside surface

Hello, I want to visualise a surface (isosurface) loaded from a ccp4 file on top of a protein binding site. When I load the volume and adjust the level properly, I can see the “correct” surface (visualised usually on Pymol), but this is only possible when I view slices of the volume=cube box. If I don’t use the sliced view, I only see a cube. Essentially, my question is how can someone hide the “negative” volume inside the cube box that is not part of the depicted isosurface? Thanks, Best, Stel Iliadis