Sketchup pro Modeling Creating compound objects with new Booleans

I could, once again, make a duplicate, hold down Shift and drag, make a copy. And then right-click and convert that copy to editable poly. Then in element mode we can select one of these and move it. And as I said, what it does is it creates new edges, but it doesn’t delete the original operand. Those are the different operation types, except we didn’t look at one, which is intersect. I’ll turn imprint back off again. And with those four cylinders selected choose intersect. And we see a curious result, which is apparently everything has disappeared. What’s happening here is that we’re trying to find the overlapping volume, but none of these objects actually overlap with one another.