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The working principle you can see at this video:
The amazing toy for drawing the artistic patterns. I designed wheels with two sizes of holes.
Spirograph sets I'm printing in mass for Covid affected stay at home coworkers and their kids... another time passing joy. Thanks for sharing your designs Valdis! Printed on a mix of Robo R1+ AdimLab S and Prusa i3 Mk3S.
Easy print and works better than one I bought. Thank you to the designer!