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Hi everyone, I'm quite a beginner in Houdini, so maybe someone can help me with this issue. I'm trying to create an erupting volcano with Flip Fluids (the lava, not the smoke), so I modeled a geometry which I'm trying to use as a collision in the DOP network. Now, when I'm trying to use the fluidsource SOP I get some weird artifacts and can't really manage to get a decent collision SDF volume. One thing I've noticed is that the new VDB volume is really fast and gives me a very good result, but even after I've used vdbconvert to convert my VDB to a default houdini volume I couldn't use it as a collision in DOPs using the sourcevolume DOP. (Please check my attached pics.) Are there any tips on how should I handle this problem? Is there a way to make this VDB volume usable by DOPs or ar there some parameters I can tweak that make the fluidsource SOP output a good collision volume? Thank you.