I also have questions on types of models that can be used for a Procedural Geometry Boolean Subtract. Level of detail restrictions? Subpatched vs. regular mesh? Tris vs. quads? I have had models I thought were watertight, but then it said it had manifold failure. All points were welded and there were quads only or tris only. I'll put these last questions on my original post in case it helps to get an answer sooner. I have to do a proof of concept before project gets underway, so I'm trying to find answers as quickly as possible.