Stellated octahedron

thingiverse

To craft this SketchUp model, I utilized guidelines from a video by Bonnie Roskes of 3DVinci, which can be found at http://mathforum.org/sketchup/videos.html. The site also features numerous other useful tutorials. Additionally, there's an informative Wikipedia page dedicated to the stellated octahedron: http://en.wikipedia.org/wiki/Stellated_Octahedron. However, I encountered a challenge in creating a clean STL file; if I failed to remove the internal polygons forming the octagon, it resulted in a model with a hollow center - an interesting yet risky design.