Impossible 3D printed Penrose Triangle: solved?

Artur Tchoukanov, the dsigner of the new 3D printed paperclip the Infinite Clip, loves topology and design. This is why he became intrigued by yesterday’s blog post about Ulrich Schwanitz’s impossible penrose triangle on FastCoDesign. Mr. Schwanitz would have seemed to 3D print a triangle that would seem to be mathematically impossible to make. Artur thinks he”s solved Mr. Schwanitz’s riddle on how the Penrose Triangle was made. He has put his solution on Thingiverse here to share it with others. As to how Artur came up with his solution? “The first clue was that the top face was in shadow (darker)… that let me to believe that it was a concave surface. Then I figured that they all need to be connected.” Artur then designed his solution using Rhino. So we’re curious to see if Artur did solve it? Or is there another solution?

P.s, this is not some 3D printing service pissing contest. Its rather more of a topology/geek riddle thing. Fun game though.

  • Stor

    Hey Joris,

    There””s a Google Sketchup model in the Google Warehouse that is designed like that:

    Yeah, on the image it looks like the moebius triangle, however if you will open that – that””s just the render illusion :)


  • Anon

    Of course when someone rises to the challenge and attempts to figure out how it was designed he then stifles their creativity with a DMCA takedown notice. Shameful

  • Joris Peels

    I””ve thought about it and although I was angry and full of disbelief initially I don””t think its necessarily shameful. Its more of a bad PR move. I think Ulrich just felt that he wanted to lash out and claim his idea. I think he was unaware that no one was out to steal his idea. But to me that is exactly the point of this blog post I””ve been working on for weeks in anticipation of something like this:
    I””m going to sound like your second grade teacher here but, there are only losers here. For the moment. I think in the long run we can all benefit if we get together and figure out how we want to let people share and profit from ideas.

  • Joris Peels

    So its a hidden forbidden Penrose shape. There is now a 3D printing underground hiding away prohibited forms. Thank you for that!

  • chylld

    A new original version has been uploaded here:

    Ulrich has no ownership over this one.

  • Sphie

    thats cool

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