Uploaded STL analysis

IE–TE–023 · Octet-Stellation Analyzer

Working identification: an octahedral core with eight elongated triangular pyramids erected on the medial triangles of its faces. It has full cube/octahedron symmetry, but it is not the canonical regular octet cell.

What makes it unusual: the spike bases use the 12 edge midpoints of the central octahedron. Those 12 points are also the vertices of a half-scale cuboctahedron. Use Morph to regular octet to expand the medial bases into full tetrahedral face connections.

Source decomposition

Octahedron core Eight spike modules Source wireframe 6 / 8 / 12 nodes Medial base triangles Cuboctahedral shell

Comparison layers

Cube envelope Regular octet cell Stella octangula Repeating matrix

Transformation

Morph to regular octet 0.00

Explode spike modules 0.00

Surface opacity 0.30

Glow / line weight 1.00

Pulse amount 0.08

Camera & motion

Camera distance 7.80

Auto rotation 0.18

Matrix radius 1

Mesh facts

Unique vertices

Triangle faces

25.4

mm cube envelope

Octa nodes

Cube-corner tips

Cubocta midpoints

8 core faces 24 lateral spike faces 8 omitted base triangles edge-midpoint shell

Exact edge-length families are in the ratio 1 : √3 : 2. The STL is topologically open because the eight medial base triangles are absent and their edges are not welded into the large octahedron faces. That appears structural rather than accidental.

Navigation: drag to orbit · Shift+drag to pan · wheel to zoom · Space pause · M auto morph · E explode · +/− zoom.

Source form · distance 7.80

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