This is the original version of Fairly Twisty, a solid 3D print. The corners are 20x20x20 mm cubes, like in a Rubik's Cube. However, the geometry is quite irregular.
Watch the YouTube video
Read at the Shapeways Forum
Read more at the Twisty Puzzles Forum
Please contact Oskar directly if you are interested in obtaining a fully colored, stickered and assembled sample of this puzzle.