Cervical dilation practice training rings

Cervical dilation practice kit that I made for my daughter (who is a nurse). There are rings for size 9-4 that are stored inside a case. The bottom part of the case serves as size 10 and has holes for sizes 1-3. Their is a top case which has holes sizes 1-5 (because why not - takes less print time and filament). I also included a small case top that will take less print time and filament. However, be aware that I haven't printed and tried the small case top case - you may have to tweak it a little.

There are separate STL files for the large and small rings so that they can be printed in different colors.

If you want to purchase one of these, I modeled it after one that is on Etsy for $30! See https://www.etsy.com/listing/1002678084/cervical-dilation-pocket-trainer-new

The OpenSCAD source file is included so modify as you desire.

Updated 4/11/2023
Test printed the small top and modified so that it fits and works (at least on my printer). Also changed the bottom case to have