The file 'Customizable Sierpinski Tetrix 3D Printer Model' is (scad,stl) file type, size is 28.9KB.
Continuing the theme of fractals that print with their own support structures, this is a model of the Sierpinski tetrix, a fractal based on the tetrahedron. It's a difficult object for a fused-filament printer because it involves lots of bridges, and the individual tetrahedra are only lightly connected to each other.
To make this model I started with cgranade's OpenSCAD Recursive Sierpinski Tetrahedron, which includes a clever adaptation for 3D printing, a parameter that adjusts the adhesion between adjacent tetrahedra. It makes the tetrix less like the mathematical ideal, but a perfect model isn't printable anyway.
I added external support that lets the model print upside-down, which solves the bridging problem. See the instructions for how to customize it and suggestions on how to get a good print.
sierpinski-tetrix.scad | 2.9KB | |
sierpinski-tetrix.stl | 84.2KB |