|My version of the mechanism that would make an r-theta Etch-A-Sketch possible|
|To illustrate one possible solution for a halfbakery idea by AO|
|A mechanism that would make a spherical Etch-A-Sketch possible.|
This would need to use worm gears as above to prevent interference between the two controls.
|To illustrate a halfbakery idea which was redundant and so was deleted|