These pictures are computer renderings of some of the pictures my drawbot can create. I try to simulate the way a real world markers dry out but there are a lot of variables going on once the drawing starts. I have found that differences in foam board makes a huge difference in how long a Sharpie will last.
The finished drawings will look similar to this on a 40x30 foam board.
Please click on any of the icons below to see a larger version.