Four hollow cube shapes based on 13 x 13 x 13 1mm cubelets.
The design replaces the straight edge between each cube vertex with a long folded spring. The White Strong and Flexible material is ideal for making a strong, springy cube that can be used to make puzzles and perhaps many other things.
3.3 w x
3.3 d x
1.299 w x
1.299 d x