Puzzle ball cage

thingiverse

The human puzzle demands two precise copies of block 1, coupled with an exacting total of ten identical replicas of block 2. Since these mirrored blocks are interchangeable, it makes no difference which one you carefully place ten of and which one you accurately position two of. Although a sphere is not an essential component, the original wooden version did incorporate a sphere within its structure, so I have also included a sphere to be cleverly concealed inside the completed enclosure.