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In the 19th century, Olaus Henrici constructed a model of a quite symmetric cubic surface. This is a modern variant of it, allowing also to look at it from the bottom (which was filled with support material in the 19th century version). This is a very interesting aspect in the case of this model because one can now "look inside" the "bubble" in the center of the object.
We provide two sizes: small (10cm / 3.9in) and medium (15cm / 5.9in).