3D Optical Illusions | Devil’s Tuning Fork

3-Dimensional illusions cleverly created by draughtsmen.  These are a collection of impossible objects. 3-Dimensional Columns Devil’s Tuning Fork 3-Dimensional Door Penrose Triangle 3-D Tongue and Groove Cool Optical Illusion  Sponsored Links ∇ 3-Dimensional Columns Do you see round columns, or square?  How does the draughtsman do that? Devil’s Tuning Fork Question: Does the rod in …

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