Cube Puzzle - SOMA

Just a 1.6x scale of Cube Puzzle by drayde http://www.thingiverse.com/thing:3784

It is nested to fit on a single build (for an old CupCake, LOLz)

I had one of these as a kid:
https://en.wikipedia.org/wiki/Soma_cube

A person has a nice fan site:
https://www.fam-bundgaard.dk/SOMA/SOMA.HTM

Original Peter Heim manual:
https://baxsie.com/images/SOMA/SOMA-manual-year-1980.pdf

And there is a nice PDF scan of the Parker Brother's manual buried there::
https://baxsie.com/images/SOMA/N160817_Par