That thing in the Robo3D R2 Ads

thingiverse

I acquired a Robo3D R2 printer, and in all the images, it featured this solid on the print bed. I was counting on it being a sample print included with the printer. However, that wasn't the case. So, I spent a considerable amount of time scrutinizing the picture, tallying up the faces and studying the shape of each face, and ultimately concluded that it's a Rhobic Enneacontahedron (wire frame) (refer to Wikipedia: https://en.wikipedia.org/wiki/Rhombic_enneacontahedron). This essentially means a 90-faced solid where each face is a rhombus - a four-sided equilateral polygon. In this instance, two different sizes of Rhombii are used. I proceeded to find a SCAD generator at http://kitwallace.co.uk/3d/solid-index.xq?id=RhombicEnneacontahedron&mode=solid, which is where I obtained the SCAD file from. This left me with the task of printing it in a way that would produce satisfactory results. The item pictured was printed at reduced speed and highest resolution available on the printer, taking 19 hours to complete. However, printing at lower resolution yielded something in about 5 hours - albeit with some issues. I am still waiting for a weekend to print a full-sized one (190mm) as seen in the promotional pictures.