The first 100 people to use code SCIENCE at the link below will get 60% off of Incogni: https://incogni.com/science This is a development of the barber pole illusion and is related to a few other illusions like the Mephisto Spiral (the spirals that won't come apart), the illusions ring and the rolling rings illusion. Ada Cohen's 3D projects can be found here: https://www.printables.com/@AdaCohen You can buy the ring from Grand Illusions here: https://www.grand-illusions.com/optical-illusion-ring-c2x21139886 My 3d printer is an Elegoo Neptune 2S: https://www.elegoo.com/en-gb/collections/neptune-series-fdm-printers You can buy my books here: https://stevemould.com/books You can support me on Patreon and get access to the exclusive Discord: https://www.patreon.com/stevemould just like these amazing people: Tj Steyn Pavel Dubov Lizzy and Jack Jeremy Cole Brendan Williams Alan Wilderland Frank Hereford Lukas Biewald Damien Szerszinski Marshall Fitzpatrick Heather Liu Grant Hay John Zelinka Paul Warelis Matthew Cocke Nathan Blubaugh Twitter: http://twitter.com/moulds Instagram: https://www.instagram.com/stevemouldscience/ Facebook: https://www.facebook.com/stevemouldscience/ Buy nerdy maths things: http://mathsgear.co.uk/