Turn Two Cubes into a Rhombic Dodecahedron I

Rearrange pieces of two cubes to form a rhombic dodecahedron.

Steps

1. Cut out eight pattern pieces from card stock.
   
2. Fold along the dashed lines.
   
3. Glue together to form tetrahedra.
   
4. Tape four tetrahedra together as shown so that they hinge along the edges. Leave a small gap between the pieces.
   
5. Tape the other four tetrahedra together in the same way.
   
6. Fold the pieces up one way and you create two cubes. Turn the two cubes inside out and put them together to make a rhombic dodecahedron.
   

References

• (Loeb 1991)