Maths has finally discovered a self-righting tetrahedron!

Video Description

Check out the amazing Bambu Lab printers: https://www.awin1.com/cread.php?awinmid=46345&awinaffid=2412541 Print some maths! https://makerworld.com/en/search/models?keyword=math Here are the STL files (and project files you can open in Bambu Studio) for the tetrahedrons in this video: https://www.dropbox.com/scl/fo/jwva4zx6r4327lyg9zgy5/AKFZ5nUzo7QmD_mMhaD01uI?rlkey=9f41h2xsb7ybanjh1jibit8mz&dl=0 This is the Quanta Magazine article which broke the Monostable Tetrahedron news in June 2025. https://www.quantamagazine.org/a-new-pyramid-like-shape-always-lands-the-same-side-up-20250625/ Huge thanks to Gábor Domokos for helping with this video and all of his incredible maths research. Check out his work here: https://scholar.google.com/citations?user=jvULYuYAAAAJ&hl=en Colin Wright is my maths mate who had the "lost model" all these years. Classic Colin. https://www.solipsys.co.uk/new/ColinWright.html Steve kindly showed me his Gömböc. In return, he could really use a subscribe on his (excellent) channel: https://www.youtube.com/@SteveMould/videos Thanks to Jupiter Artland for letting us come and film with the "Cells of Life" landscape sculpture. https://www.jupiterartland.org/ Ayliean's knot prints are from the "Trefoil Menagerie" by Laura Taalman. https://mathgrrl.com/designs/ Huge thanks to my Patreon supporters. They keep me monostable. https://www.patreon.com/standupmaths CORRECTIONS - At 12:25 I say B and C both tip on to A. This is incorrect. One tips to A and one tips to D. - Let me know if you spot anything else! Filming and editing by Alex Genn-Bash Additional bad filming by Matt Parker Written and performed by Matt Parker Produced by Ayliean MacDonald Additional production by Nicole Jacobus Music by Howard Carter Design by Simon Wright and Adam Robinson MATT PARKER: Stand-up Mathematician Website: http://standupmaths.com/