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Tetrahedral Duals (unequal weight)

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3D model description

Two tetrahedra (triangular-based pyramids) whose edges intersect at right angles at their midpoints. This makes it the only self-dual of the five Platonic solids. The edges of one tetrahedron are thicker than those of the other.

3D printing settings

Model dimensions (mm) - X: 47.0, Y: 41.6, Z: 49.7.
Be sure to scale size up or down before you print.
All the pairs in this dual set have diameter 80mm.

3D printer file information

  • 3D design format: STL Folder details Close
    • bigtetradualne.stl

    Learn more about the formats

  • Last update: 2020-07-02 at 20:16
  • Publication date: 2020-05-24 at 06:09





Hi, Dan Bach here. I'm a lifelong math nut, a career math teacher and author, and now a 3D math artist and designer. Download some of my polyhedra or space curves! Print them or use them as assets in your video games.

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