Coming along nicely. I had a few minutes to provide what I promised. You are almost done, but for the future…
This was done fast, I provided the script as well as image. Some care needs to be taken to do more at a lower level and smooth the outer edges, but I think it explains the idea similar to what you see in the feature POTCDMC that was out this summer.
Note: it’s a very poor zsphere structure - for those thinking I provided a near live tentacle to play with. I ws experimenting along the way.