Thanks for the great comments.
Kapusta wrote:
Very nice puzzle! I saw the video yesterday, and I still have trouble seeing the helicopter cube in it.

Maybe this picture helps?
Attachment:
File comment: 1
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-Mark-

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Tony Fisher wrote:
A rare puzzle is one that is only lightly cooked.
Kelvin Stott wrote:
Squiggle is such a funny word to say out loud. Squiggle!
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