Thanks, but what I'm getting at is that the little box/square tower in the bottom right of my image is not part of my .STL file. It shows up every time I slice any .STL file, in exactly the same spot. If I chose not to generate support, it does go away, but if I'm printing a model that needs support then this extra thing always shows up. I can't make it go away. It isn't selectable in Cura, I can't rotate it or move it, but if I place my part-to-be-printed over it, it says "Unable to slice - Nothing to slice because none of the models fit the build volume. Please scale or rotate models to fit." So every time I print I have to waste this extra material printing this phantom object. I want to figure out how to make it go away even when I am printing with support.