Because this is hidden in another post, this is a repost to a question about creating a trabecular mesh with a dynamic surface, I was able to create the sponge like filter mesh using single sided shape, alpha and fuzz (can be done with flakes as well for a more organic shape) to generate geometry on the fly.
In case anyone else is interested, here is the thread: https://forum.keyshot.com/index.php?topic=28988.new;topicseen#new
Wayne
Wizardry! Thanks for the post and re-post.
I was watching that thread! Def one for the online material library!
Great solution!