I'm VERY new to Blender here. Now I've been trying to design a set of VERY simple 3D models, comprised of notched cubes occluded by a sphere.
A research assistant who is more familiar with Blender suggested I add an intruding rectangular prism and cut out its volume from the cube using the Difference Boolean modifier, but I just find this unnecessarily roundabout and it doesn't allow for the dimensions of the notch to be properly controlled.
My hope is to so somehow subdivide the cube into 16 smaller blocks, and be able to simply delete blocks out of the overall shape. I figure this would involve some sort of Extrude command, but I'm not sure how I'd do that.
The "local" and "global" models I've included in the attached image are hand drawings of the models I had in mind.