Does anyone have more information? Compass CNC was taken down to 'amicably' resolve a patent infringement case with shaper tools. Their website it totally gutted, their youtube videos are all private.
https://www.compassrouter.com/
I'm trying to find what has been archived from their designs. Surely some people who have built it will have the code, bill of materials, and stl files.
If you're unfamiliar with the project make zine has an article with some pictures. https://makezine.com/article/digital-fabrication/machining/compass-cnc-heads-forward/
Depending on which patents shaper tools claims are relevant this design could be out of the public domain until anywhere from 2030 to 2042!