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I'm sorry for so long to reply to you, I have solved this problem, and now, I have a new problem. I want the grids from the center of model(0,0,99800) to outside gradually become sparse. but at the points of the four corners of the middle cube, the grids is not encrypted. how to achieve it.

Hello, I want to build a hexahedron,placing a sphere in the hexahedral inside,I want them on the grids of different sizes to split.But I found I always can not grasp the relationship between cube and sphere.I tried to use ‘the Geometry->Edit->Volume Boolean op.->substract and intersect’...