SOMA Puzzle Cubes

Inventor Piet Hein and his SOMA puzzle cubes were always a bunch of fun to play with, so I recreated them in #Construx. The Seven irregular combinations of 3-4 Cubes form a 3x3x3 cube, and are used to make puzzle figures.



Here the 6 remaining pieces form a double-sized copy of the 3-cube piece. I had to adjust the models so they didn't overlap. The original soma cubes assemble with no gaps because they are simple solid blocks. My frames needed spacers to assemble properly.



Notice the little yellow axles with nuts in the center. They fit the Construx pieces' holes) With these in place, lightly squeezing both sides of the assembly lets you lift it as a whole and turn it on end:



Pretty META, huh?