Fractal Pyramid with Continuous Cross-section
Description
No Supports. No Bridging. No Retractions. It Has The Astonishing Property That The Horizontal Cross Sections Are Simply Connected And Change Continuously With Height, So Can Be Printed Perfectly With Spiral Mode (Or Single-Walled Without Infill).  This Fractal Is Half Of The Octahedron Flake (Or Sierpinski Octahedron). Every Triangular Face Is A Sierpinski Triangle, And The Base Of The Pyramid Is (Approximately) A Space-Filling Curve Called The Sierpiński Curve. Figures Like The Vicsek Fractal Also Exist In This Model.
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