Recently i have been pondering over how the hell CNC milling machines get such precision based vector lines. I was hoping to find some tutorials for arduino that would explain the theory behind this technology. All i found out so far is that the whole thing is fairly confusing. Despite my confusion i am very happy to have found this CNC controlled etch a sketch. Its not a toy its a precision engineers dream.
A couple of people have acheived etch a scetch prefection:
and last but not least (check out the retro main image):