Next in the series of bugle bead rings of polyhedra is a ring of 16 Sphenocoronae!

A Sphenocoronae is another Johnson Solid – this time J86. It’s made up of 12 triangles and 2 squares. It’s essentially two pentagonal pyramids on a base of 2 squares, with 2 more triangles filling in the gaps:

It’s quite a nice shape to weave together, and like the previous two rings this one is made with 12mm bugles, nylon monofilament and polyhedral angle weave. It does use an extra “linking” bugle to join the polyhedra together – forming a tetrahedra in between each sphenocoronae on the outside of the ring.

Like the ring of snub disphenoids, I learnt about this shape on Rafael Millán’s GeoMag website.

This one is quite a bit larger than the other two, so doesn’t work as a bangle with 12mm beads. I’m enjoying making this series though and have one more shape to try!