00:00If you wanted this cube to pass through
00:02another identically sized cube
00:04well a normal square tunnel wouldn't work
00:07To actually do this
00:08You need to turn the hollow cube
00:10into one of its corners
00:11Looking straight at it
00:13it suddenly becomes much wider
00:15Now just cut the tunnel to match that shape
00:18And the identical cube can slide straight through
00:20Now you might think it'd be a perfect fit
00:23But the opening is actually wide enough
00:26for a cube about 6% larger
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