More details about Jane Street's WiSE and WiTT events: https://www.janestreet.com/join-jane-...

Here is the reddit post I first saw:

"I designed an Intertwined Mobius strip of Gears. 60parts, 285 balls"
  / i_designed_an_intertwined_mobius_strip_of_...  

Just the gif:
https://i.redd.it/wi38hd95ebb11.gif

Thanks to ElminsCosplay for making the cogs for me! Check out their other stuff.
  / elminscosplay  

If you really want to, you can buy my book:
https://mathsgear.co.uk/products/humb...

These are the lectures I mention:

What Happens When Maths Goes Wrong? - with Matt Parker
   • What Happens When Maths Goes Wrong? -...  

Matt Parker: "The Greatest Maths Mistakes" | Talks at Google
   • The Greatest Maths Mistakes | Matt Pa...  


This is my previous video with Sabetta:

Exploring Hyperbolic Space with VR (and crochet)
   • Exploring Hyperbolic Space with VR (a...  

And check out Henry's crazy gears:

Three Gears are Possible - Numberphile
   • Three Gears are Possible - Numberphile  


CORRECTIONS
When I read the poster I say that education works best when all the parts are “moving” instead of “working”. The first person to complain about this was Steven Brace.
Let me know if you spot anything else!

Thanks as always for Jane Street being my principal sponsor.
https://www.janestreet.com/

Thanks to my Patreon supporters who help make these videos possible. Here is a random subset:

Andy
Fernando Gaete Ferrari
Daniel Brockwell
Matt Langford
Markus Herrmann
Erin Eldridge

Support my channel and I can make more maths videos:
  / standupmaths  

Music by Howard Carter
Filming and editing by Matt Parker
Design by Simon Wright

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
Maths book: http://wwwh.umble-pi.com
Nerdy maths toys: http://mathsgear.co.uk/