Split-Key Ring Opener

Split-Key Ring OpenerI hope this little object can be useful to you too. I had to insert objects into a hundred spiral rings, I tried to open them with my nails, after about ten I had no more nails,I tried with a screwdriver, but most of the time it fell, it was absolutely not practical, so I made this, simple, immediate but above all functional object.No printing advice, they are not needed, the object is so simple.30/07/2025: As requested, I added a template with a larger fingertip area. I hope it's equally useful.Happy printing to everyone