This is a ring made of 14 repeats of Johnson solid 89 - the hebesphenomegacorona

It requires 406 rods, 140 balls and 28 square panels for the ring itself, plus I have added two legs requiring a further 14 rods and 4 balls.

It is fairly easy to make, lying on its side and adding one hebeshenomegacorona at a time. There's a small gap at the end, but the shape can flex to close it and remains quite strong.