How I made my drawing machine, and in the process made artists obsolete. When I first moved into my new studio, I had no important projects looming, and wasn't yet comfortable in the space. I built this "Drawing Machine" so that I could be productive, but not really. I would set it up, turn it on and then read Sculpture Magazine for a while as the machine did its jiggly business. This project was built using junk found around the studio for a cost of $0.00. It utilizes an old power drill with an offset cam in the chuck for motion.
Step 1: The Machine
Essentially, it's a power drill with an offset cam in the chuck clamped to a box. The cams were made using a hole saw on 1/8 inch copper sheet, with a thick copper stem hard soldered off center. A good deal of flexibility is available in this detail, as a lot of cam configurations can be used. The pics make it pretty clear how the rest of the thing is made. It's not rocket science, it's art.