This is a derived work from this SnubCube model. It has been processed by NetGen5.3 to create a tetrahedral FEM mesh (a tet mesh) inside and on the surface of the model. The tet mesh is exported in GMSH V2.X format. Using custom written code, all the edges of the tets are collected, sorted and duplicate edges are removed. The edges are Unioned together (as cylinders with spherical end caps) to produce a fully tetrahedral model. The model is then exported as an STL.

I posted the original tet mesh, one level of refinement, and a second level of refinement. I printed the first level of refinement model.

I added a pic at about the half-way point to allow you to see inside the tet mesh.

The model didn't need supports but it did need a raft to help adhesion to the bed.

The shape is featured on the streaming series: Foundations