https://www.instructables.com/Paper-Hole-Drill/
Nice jig to use to convert ALOT of paper to go into a 3 ring binder. Most 3 ring binders have the same spacing so this should work with all of them. 10 years ago I would have thought about making this myself, but now…I keep alot of stuff electronically. However for those long term papers I need to keep….hum…