With many aspects this is a helicopter cube or a curvy Copter. The axis system is the same as the number of cuts but the cutting depths are different.

• Inventor: Grégoire Pfennig
• Mechanism: Edge turning hexahedron (axis system)
• Patents: Unknown
• Producer: 3D printing service
• Year: 2017
• Original Price: $0.00 USD
• Current Price: No Data

This puzzle is a compound of two different helicopter cubes or (thinking of its round cuts) Curvy Copters. The axis system is unchanged and (without jumbling) the puzzle even does not change its shape.
The extreme look of this puzzle comes from the fact that four of the cuts are shallower. This is an extremely rare feature that has been implemented only in corner turning hexahedra, prisms and some face turning cubes. Therefore the puzzle stresses the boundaries of 3D geometry.
Edge length: 60 mm
Weight: 158 grams

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