Johnson Compounds as Ornament

thingiverse

Interesting two-color ornaments can be made from some Johnson Compounds (see thing:32445). These compounds are easy to construct as they involve combining two polyhedra per color. However, a limitation is the need for flat bases due to current two-color software in ReplicatorG. Fortunately, several options are available. Three examples of two-color prints with added connectors at the top include Compound_J18_color_1.stl and Compound_J18_color_2.stl, Compound_J42_color_1.stl and Compound_J42_color_2.stl, and Compound_J68_color_1.stl and Compound_J68_color_2.stl. The openSCAD code that produced these files is in Compound_Johnson_color_scad.zip. These ornaments were printed on a Replicator with 3 shells and 5% infill. J18 was chosen because it has only 14 faces, all partially visible in the compound. The dual forms a band around middle of J42, while ten decagonal faces are pierced by its dual in J68. Other easily convertible Johnson compounds for two-color printing from thing:32445 include J7, J35, J43, J44, J48, J65, J66, J67, and J69.