Christmas Ornaments - Compound Polyhedra

thingiverse

Here are three Christmas ornaments made from compounds of dodecahedrons and icosahedrons. The polyhedra were generated so that the principal axes of the coordinate system, x,y, and z, coincided with 3 of their 2 fold axes. Before combining one of the polyhedrons was rotated by 90 degrees around the x axis. ornament_1.stl - two dodecahedrons - the result has octahedral symmetry ornament_2.stl - one dodecahedron and one icosahedron - this is the dual compound - it has icosahedral symmetry ornament_3.stl - two copies of ornament_2 - the result has octahedral symmetry OpenSCAD code is included. George Hart's Virtual Polyhedra Site has some information about compound polyhedra - Seehttp://www.georgehart.com/virtual-polyhedra/compounds-info.html Instructions The ornaments were printed on a raft with external support. On my Replicator they took about 3 hours to print using 2 shells and 5% infill. When first generated by openSCAD the stl files had multiple shells and were not closed. Netfabb Studio was used to repair the files.