I was curious to see how these generated images

Would come out of a polargraph machine. It’s just a section from the middle, on A3 paper. I rotated it so that the main horizontal flow was aligned with the symmetrical axis of the drawing machine’s pattern.

Row size is 45 steps, and tip size 0.2mm, using a 0.1mm UNIpin pen. Bears little resemblence to the original, but not unpleasant. Rather undisciplined pattern though, could benefit from a bit more weight on the gondola.