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Failed self-collisions in vellum tet simulation

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I have a vellum sim with many failed self-collisions that I'm sure how to resolve. They are marked in red in the attached video.


The resulting sim has the general behavior I was looking for, but with some ugly artifacts. I want the ball to squish as it pushes through the opening and pop back into place on the way out. That works like I hoped, but the ball shape ends up with dimples, presumably because of the self-collision issue.


The HIP is attached, and you can download the cache files as a zip or 7z.


Any advice for debugging this?


Thanks in advance!



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