This is a quail egg cutter. You can't just crack open a quail egg like you can with a chicken egg. You have to cut the top off and pour out the contents. This cutter makes that possible.
It prints in three parts. Glue the frame together with super glue and slide in the cutting blade.
I printed mine at 100% infill.
I've made a video of this item in use and you can view it at https://youtu.be/0UO4l0bFPoA
**UPDATE - Finger hole now goes all the way through frame for easier use.