Cube from Recursive Four-Sink Base

This cube is made from six units, each of which is a recursive four-sink base modified for use as a module.
Each base is folded from 8×8 grid (where 6×6 would suffice for the plain base) and one part is folded back, creating rectangular flaps. At this stage units could be connected like the units in the Jackson Cube, however I additionally squash-fold the sides to create additional triangular flaps which make the assembly much more stable.
Four-sink base and variants are widely known and often tessellated, the modification for use as a modular is my design. The recursive version looks very similar to the model known as Andrea’s Rose (J.C. Nolan) — I haven’t checked if it is exactly the same or if there are any differences.
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