Rhombic Dodecahedron Infill

thingiverse

This old idea of mine uses rhombic dodecahedra for low-density fill and features walls that are two paths wide. The angled walls help distribute forces evenly, providing strength. To prevent large cell sizes from compromising stability, outermost cells can be filled with a finer resolution infill. The filament paths appear to have varying spacing but are consistent when accounting for slope, ensuring strong layer binding. This design also prevents filament from entering gaps during cornering and allows head velocity maintenance by avoiding sharp turns. Developed in 2011 after years of thinking, this concept requires linear interpolation between layers in the SVG file. Stub layers help prevent material buildup, while grid points enable scalability. However, fitting paths to clipped shapes needs further optimization, and I'm open to questions about this infill approach.