Summary Fractal icosahedra calculated by OpenSCAD. Print Settings Printer: Da Vinci 2.0 DuoRafts: YesSupports: Yes Notes: The "daughter" icosahedra are generated at the point so that a corner of daughter shares a corner of "mother" icosahedra. For level 1 & 2 (this is the limit on my PC), I tried two (mother:daughter) ratio - (1:0.5) which is rather solid, and (1:0.385) which is minimum ratio that the object be one solid (touched by the edge). The stl files are rotated to make the flat face bottom, resized to radius 50mm. See the comments in the OpenSCAD source about size specs, rotation angle. Fixed data using Microsoft Model Repair service. I made it using cheap FDM printer (Da Vinci), then found the facets facing to the bottom becomes dirty, at fractal level >= 2. One solution is, divide solid into two when generating, later get rid of supports and glue - rather better. The switch "half" in OpenSCAD source controls this.