Half Turn Tetra is an edge-turning tetrahedron, suggested by Andreas Nortmann. If this puzzle was a shape-mod of a regular 3x3x3 Rubiks Cube, then it would shape-shift. However, the internal mechanism allows only 180-degrees turns. This way, shape-shifting is prevented.
Watch the
YouTube video.
Watch
"the making of" 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.