More Icosahedral Pencil Holders

Here are two additional icosahedral pencil holders - see thing:81434.

One was constructed by replacing the faces of an icosahedron with hexagons composed of triangles. It looks like a mini "Bucky ball" and contains 19 hexagons and 12 pentagons.

The second holder has circles in place of triangular faces. The spaces left by the circles are filled with hypocycloids.

Stl files are:

icosa_holder_6v4.stl
icosa_holder_circles.stl

and the openSCAD code is: icosa_holders_2.scad.