Snub Archimedean Pencil Holders

Here are four pencil holders, two based on the snub cube and two on the snub dodecahedron.

A fifth has been added - a snub cube composed of spheres and hypocycloids - see image.

Of the Archimedean solids only the snub cube and the snub dodecahedron occur in mirror image pairs. OpenSCAD has a "mirror" command which makes the alternate forms easy to generate.

Four stl files are provided:

snub_cube_l.stl and snub.cube_r.stl
snub_dodecahedron_l.stl and snub_dodecahedron_r.stl

togeth