"Bob H." wrote:
> Maybe this is what you're thinking of.

In fact, no :-). The picture I saw had the cut edge also "rounded",
blobby-like way, and that blobby-like cutting object in two was the
effect I am looking for. I didn't see source that time, so it might have
been made of pieces; I think "blobby" intersection of superellipsoidic
cube and planes could reproduce one of those parts, but I was hoping
there would be some way just to split object in two.

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