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This was made by extending a 4x4x4 with high impact polystyrene plastic sheet in 2009. The puzzle is very light for it's size and although a little clunky it moves very well. I used standard Rubik's Cube style stickers. I suspect there must be other bigger 2x2x2s out there but I have never seen or heard of any so it's possibly the largest in the world. See- for photos and more information on this and all my other puzzles.
