Adjustable Spirograph V9 by PG52
Already have some of the parts? Use the Build this MOC page to only show the parts you are missing.
Waiting for Inventory to load
A test I made only changing the speed that the arms rotate (the two switches furthest from the turntable). I kept the the speed of both arms to be equal and looked at the effect of arm speed on the pattern of 'petals'. I continuously get a pattern of seven petals that completes in one rotation of the paper.