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Product Description
This is the bottom half of the torus with polyomino tiling suggested to me by Naftoli Kolodny. It has cylindrical holes where the cylindrical extrusions from the top half fit. One hole is red to match the one red cylinder from the top half so that the orientation will be correct when they are glued together. The cost of buying two halves is less than the cost of buying the solid model because less material is needed inside. The shipping cost for two halves should be the same as for one solid model.
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