Sugihara Circle-to-Square Illusion Cylinder
Design preview. Rendered from the file, not a photo.
This model is not currently offered as a verified ready to buy print.
What it does
- A rounded cylinder shape with a curved silhouette for your desk or shelf
- Based on a famous math illusion, so you get a fun talking piece
- A mirror shows a different outline than the object itself
- Made to order in the USA after you place your order
- A display piece for anyone who likes math, puzzles, or optical tricks
Optical illusion toys come in many forms. This one takes the shape of a curved cylinder, built from a famous math trick discovered by Kokichi Sugihara. Its outline looks rounded from straight on, but the shape shifts when you view it from another angle or in a mirror.
The design comes from a well known math illusion once featured in a research video and later shared by a college math professor. It works because of careful curves and angles built into the surface, not paint or tricks of light.
Set it on a shelf, desk, or table as a display piece. It gives you something to show friends or students who like brain teasers and visual puzzles. Each one is made to order in the USA after you place your order.
14k downloads in the maker community. That is interest in the design on the site it came from, not our sales.
What you get
- This design prints as one piece.
- Nothing else to print or buy for this to work.
What it is made of
Designs like this print well in PLA. Compare the materials.
Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.
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Who made this design
Designed by landisbs. We did not draw it.
Shared under Creative Commons, credit required. See the original design