The shopbot is a great machine for milling wood, but you can also use it to let it make art.
This painting was made by squeezing a brush instead of a milling bit into the collet. The machine moves the brush along vector lines to spread out the paint that was put on the canvas.
Step 1: Preparation
The canvas need to be very straight on the bed of the router. use double sided tape to make sure it will not move.