Hollow Diamond is an octahedron-shaped twisty puzzle that is completely hollow inside. The puzzle has the geometry of a Skewb puzzle. The puzzle is constructed by taking a Minimal Twist puzzle and adding six pyramid-shaped plugs. Frank Tiex and Carl Hoff came up with the suggestion to add plugs.
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.