D9 Sphere Dice

by Magic
D9 Sphere Dice 3d printed Mathematical Art Dice in Red Strong and Flexible
in Red Strong and Flexible
  • White

    White nylon plastic with a matte finish and slight grainy feel.

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You'd like to see the D5, D9, D11, D16 and D24 mass-produced? It's up to you! Please, visit this Kickstarter project!

Truncated Sphere D9.

This is my own interpretation of the D9. Please check also clsn's version.

This die is inspired by the repulsion force polyhedra. In fact, the underlying polyhedron (not rounded) looks like the shape that can be obtained through this technique with 9 points repulsing each others.
But in this case, I calculated the positions of those points to have a maximal radius for the circles resulting from the intersection of this underlying polyhedron with a sphere. The result is a truncated sphere with 9 circular faces of same radius.
It is numbered from 1 to 9: 6 numbers are on vertices, 3 on edges, none on the faces. The sum of the numbers on the upper vertices is 15. Same thing for the sum of the 3 numbers on the lower vertices and the sum of the 3 numbers on the edges. This numbering is closely linked to the well known 3x3 magic square.

This die is made of a shell of 1.5mm that contains support material to make it heavier. The engraved numbers have a 0.75 mm depth. This new version has big numbers that should be easy to read.
More informations in this post.

Available Truncated Sphere Dice: D4, D6, D8, D9, D10, D%, D11, D12, D14, D15, D16, D17, D18, D20, D24, D32, D33
Alternative shapes: alt D8, 3-fold D10 (rounded), 3-fold D10 (pointed), 4-fold D10, 5-folded D10 (pointed)
Coming soon: D22, D50
Related dice: Concave D4, Concave D6, D4 Shell, D8 Shell.


IN: 0.903 w x 0.958 d x 0.875 h
CM: 2.294 w x 2.434 d x 2.222 h


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March 27, 2011, 8:37 pm


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