About this 3D model

Here are two icosahedral pencil holders. They were constructed by replacing the triangular faces of an icosahedron with triangular motifs like those in thing 75045 - Desk Ornaments. The topmost face of the icosahedron was deleted and a prism added to the base. Stl files are: icosa_holder_4.stl icosa_holder_12b.stl and the openSCAD code is: icosa_holder.scad.