Cupola-Drilled Truncated Icosidodecahedron

[pubultrastar]

I came out of polyhedral retirement for a commission piece and decided to try and make a Stewart Toroid with attached laser cut faces. This was exported from Stella4D and modified in Fusion 360. Most of this was 3D printed using marble PLA on a Bambu X1-C while the blue marble acrylic was laser cut on the .

Assembly

Stewart toroids are polyhedra of positive genus with regular faces, where no two faces that share an edge are coplanar, and where faces intersect only at edges. Many such polyhedra can be constructed by “excavating” one polyhedron from another (like the “diminishing” operation used in Johnson solids but without the restriction of convexity). Repeated excavations form “tunnels” passing through the faces of polyhedra and alter their genus.

Stella4D

Cupola-Drilled Truncated Icosidodecahedron Stella 4D

Bambu Time Lapse

Cupola-Drilled Truncated Icosidodecahedron-tl

Cupola-Drilled Truncated Icosidodecahedron-2

[deirdrebeth]

My brain looks at that and says “no”
I can’t even imagine how you designed it, even with computer help!

[shop]

it’s very much got a “death star under construction” feel at a glance.

[jamesdhatch]

@shop

it’s very much got a “death star under construction”

Or a finished one with the openings whispering “fly right in” and the voice in your head going “it’s a trap!”

[ellencadwell]

So stunning!

[ptodd]

Beautifully done! I love the blue marble acrylic! My first bowling ball had that beautiful swirl of blue.

[wenning08]

Amazing as always

[LauraZM]

Astonishing

[reynoso]

@pubultrastar

I came out of polyhedral retirement for a commission piece

@pubultrastar You have proven you never should have retired.

Stunning as always with totally unexpected geometry.