Double spiral investigation

Paper size: 21x21cm Radius of first circle: 1cm I’ve been wanting to draw a sweet double spiral for the longest time but I could never figure out what the hell was actually going on there so I set out to figure out the geometry of the double spiral. Tools used → ☾ Discord → Patreon → ☾ Music from Epidemic Sound → (awesome for creators) ☾ This video was made possible thanks to my awesome Patreon supporters and channel Dlb, Antonio Acosta, Uma Singhania, William Butler, Jacqueline Korvin, True Mcchesney, Marion Guyatt, Thea Bristlebroom, Lin Zhang, Linda, Sydney Noteboom, Anthoux, Johanna Moulton, Julia Carlin, Mark Taylor, Kristína Poráziková, Myles Williams, Casie Hansen, Humberto Romo, Kimberly Blackwood, Gavin Horniblow, All Atse