Hi, I just compeleted the polargraph. All parts were laser cut.Thanks to Sandy for promptly uploading the latest gondola svg, I'm using G3D drivers from RAMPS board, stepper from junk box. Compeleted the project in 3 days.
I've attached some pics.
I'll also link the youtube when its done uploading.

Just one issue, the images drawn are stretched hoizontally. Any pointers Sandy??

I've used all acrylic parts as it was avaiable at hand, for the counter weights I'm using half of the love joy coupler.
More photos and videos on my blog post
black-electronics.com/blog/first-drawing-robot/