B5. Take 8 black struts and place them in
the remaining gaps, so that a triangle is over
every strut in the foundation ring.
B6. Put blue hubs at the top of the
remaining triangles.
B7. Connect the hubs and struts to the
foundation ring.
It will be easier to connect the struts to the
foundation ring first, and then connect the
hubs at the top of each triangle.
