My first real contribution I hope.
I have been a fan of disk binding systems since they were older than many here. When I heard I was was getting a Glowforge as a gift one of my first thoughts was about how to cut the holes / slots/indentions with the GF.
Attached (hopefully) is a file that has correct on center and circular information for others to manipulate into their designs.
rollabind small 3.svg.zip (2.7 KB)