A completely foldable octahedron with Bassetti-style rubber band hinges and extra parts. |
The Bassetti "Poly-O" style rubber band hinges work better for completely foldable models because they maintain accurate alignment after re-folding. Here the flaps are extended to form a triangular box closure in order to keep them folded flat. The triangle sides are 5 cm, the notches are 0.25" diameter holes centered on the triangle corners.
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