x² Heptastar cube - Bandaged Polyhedron Masterpiece

x² Heptastar Cube | Premium 3D-Printed Bandaged Polyhedron Masterpiece

Push the boundaries of spatial logic with the Heptastar Cube, an elite intellectual puzzle that bridges the gap between classic unbandaging theory and modern geometric design. Brainchild of the acclaimed independent custom puzzle designer Xing Xu (internationally recognized as x²), this museum-grade mechanical artifact is brought to life via high-end custom 3D printing, offering an unparalleled tracking challenge for seasoned cryptographers and twisty puzzle collectors.

The structural DNA of the Heptastar is a brilliant mechanical homage to two iconic puzzle lineages: Bermuda 3.5 and the Octo-star. It inherits its underlying foundational axis system directly from the Bermuda 3.5 framework. However, its complex outer surface is split into four distinct piece geometries: precision centers, micro-triangles, elongated kites, and corners rendered in two completely unique shapes—a dense matrix heavily reminiscent of the Octo-star design. In theoretical puzzle architecture, just as the Octo-star serves as a bandaged Sun Cube, the Heptastar is engineered as a highly complex, bandaged variation of the Lapis v1 blueprint.

Fabricated with a boutique, semi-translucent jade-white chassis, the Heptastar features a striking asymmetric profile even in its solved state. The moment you initiate a turn, the overlapping axes and bandaging constraints trigger radical, non-linear shape-shifting that completely shatters traditional grid alignment tracking. Despite the varying shapes of its internal tracks, the advanced 3D-printed tolerances ensure smooth, stable tactile transitions with every rotational pivot. For collectors dedicated to conquering the rarest heights of mathematical permutation, the $x^2$ Heptastar is an absolute masterpiece.

🧩 Key Mechanical Features & Advanced Geometric Logic

Authentic Xing Xu (x²) Engineering: An officially authorized, premium production of Xing Xu's legendary custom polyhedral concepts.
Hybrid Bermuda & Octo-star Mechanics: Utilizes a Bermuda 3.5 axis structure paired with a multi-piece configuration inspired by Octo-star architecture.
Four Unique Piece Classes: Contains precision-cut centers, triangles, kites, and dual-shape corner segments for maximum permutation complexity.
Boutique Jade-White Chassis: Crafted using high-grade, durable 3D-printed material with a premium semi-translucent finish that beautifully highlights the puzzle's complex lines.
Radical Shape-Shifting & Bandaging: Features a specialized bandaged Lapis v1 design that forces the puzzle to contort into jagged, irregular structural forms upon scrambling.

Refer : https://twistypuzzles.com/forum/viewtopic.php?p=432028

This cube has been printed by two kinds of method & material:

1. Light Green color :
    printed by SLA with Resin
    size 7.8cm
    N.Weight ~86g
    G.Weight: 355g
    condition: 100% brand new, stickers placed.

2. Black color:
     Printed by Multi Jet Fusion(MJF) with Nylon,
     size 7.8cm
     N.Weight ~74g
     G.Weight: 335g
     condition: 100% brand new, stickers placed.

Storage remind: 
1. HDT of resin is approx. 55℃/131℉, so it’s necessary to store it in a cool place.
2. Resin is an easily oxidized metarial, so it should be kept in a dry place without sunlight. It’s suggested to put it in the original box, and it’s not a good choice to keep it on the cabinet or shelf directly.
3. The surface of the Nylon printed version is kind of no so smooth so the stickers may not easy to attach on. So please not replace the stickers if NOT necessary. 

Product include:
1x x² Heptastar 
1x Storage box
1x extra set of stickers.

3D printed, Printing time around 7~15 days. Please wait your order patiently. 

Enjoy !