As for the meta balls, that reminds me of MetaForm.. Dunno if the program (add on or whatever you'd call it, it works in Poser) is still available and I can't even recall where I bought it - but it does create a sort of fluids, I know I made a spluttering volcano with it back when I got it. My cave props here in Free Stuff is also made with it, as is IIRC my little Doggie... so metaballs can be a lot of fun. If you can get a better "fluid" engine than what was in MetaForm, then you've got an absolute winner!  (also the material zones MetaForm made was a tad confusing, something with a lot of layers I think.. I wonder if it works in newer Poser versions at all? I think it was for Poser 5 or possibly 6 - or perhaps it even worked in Poser 4 Pro Pack... hmm... it was a lot of fun L Now I miss it...

goes on an archaeological expedition in her Runtimes

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.