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The Imposible Triangle - Penrose Triangle in 3D

Contest Winner
Beauty of Mathematics

Print Profile(3)

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0.16mm layer, 2 walls, 15% infill
0.16mm layer, 2 walls, 15% infill
Designer
1.5 h
1 plate
4.7(403)

FAST AND SMOOTH REDUCED A 0.16mm layer, 2 walls, 20% infill
FAST AND SMOOTH REDUCED A 0.16mm layer, 2 walls, 20% infill
21 min
1 plate
4.7(143)

0.16mm layer, 2 walls, 5% gyroid infill
0.16mm layer, 2 walls, 5% gyroid infill
48 min
1 plate
4.6(86)

Open in Bambu Studio
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Description

Boost Me (for free)

I design because I genuinely love bringing new ideas to life and sharing them with the community. If you have a Boost token available, I’d be incredibly grateful if you considered boosting this model. Your support helps me get more PLA from the Bambu Lab store so I can keep printing, testing, and releasing even more designs. I've got a ton of ideas lined up - and boosting helps make sure they don’t get shelved before I can bring them to life. Thanks for helping me keep creating!

 

I've been doing these 3D Penrose triangles for some time, and I find the visual effect mesmerizing, especially when viewed head-on. To enhance the illusion, I recommend mounting the triangle at the base of a picture frame, which helps to accentuate the forced perspective. They sell thick frames at different craft stores - here is one from Amazon - Unlike traditional Penrose triangles that are limited to a single viewing angle, this can be admired from a few other perspectives.

 

This was inspired by an actual statue out in Belgium, where the triangle is curved in order to replicate the effect. Here is the statue by Mathiew Hamaekers - once he created the illusion back in 1997, others played with similar models.

 

If you want to add even more to the effect, try smoothing the edges. I chose not to do so for this iteration to avoid discrepancies between the model and its photographs. I want to make sure that what you see is what you get. Even then, the illusion still works.

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License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.