Circle Compass

Parametric compass, modeled after the "Circle Master" compass. Designed in OpenScad with some fun circle mathematics in the model. Just need a bolt (I used an M3 bolt) to put it together. Still working on a better stylus, but the compass works great! To form the tip for the stylus, I cut off the head of a screw and threaded the headless screw into the opening at the tip of the stylus. The tip of the screw provided a sharp point for the stylus.

You can also just use two pencils rather than print the stylus. One pencil serves as a sharp point for the center, and the other pencil traces out the circle.

Perfect compass for a high school geometry student!