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I'm looking for basic models of crystal chemical structures. The most basic example would be a cube, it gets harder though as I next need polyhedrons with one of three angles < 90°, then two, etc.

Is there a database of these out there somewhere? Or is the fastest way to make them myself?

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You may find that OpenSCAD regular polyhedron library may serve your requirements.

regular polyhedra library image

From the linked site: All polyhedra are centered at the origin and have an edge length of 1. From the linked site:

Included polyhedra:

tetrahedron
octahedron
hexahedron
icosahedron
dodecahedron
cubeoctahedron
truncated_tetrahedron
snub_cube
rhombicuboctahedron
truncated_hexahedron
truncated_octahedron
icosidodecahedron
snub_dodecahedron
rhombicosidodecahedron
truncated_cuboctahedron
truncated_icosahedron
truncated_dodecahedron
truncated_icosidodecahedron

OpenSCAD is a reasonably easy "description coding" program at the base level. I suspect that for something such as this, it might not qualify for the easy reference.

My search also linked up a few Thingiverse entries, but they weren't as sophisticated as the above and may be a subset of the library link.

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  • $\begingroup$ Agreed. OpenSCAD is the way to go. There are plenty of crystal and polyhedral libraries for it available online. $\endgroup$
    – Mick
    Jul 30, 2020 at 12:45

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