Swiss Cheese Keychain (thicker ring)

The original [Swiss Cheese Keychain](https://www.thingiverse.com/thing:1881499) often snaps where the ring joins the cheese, so I made the ring about double the original thickness. In the photo, you can see the original in white on the left and this remix in yellow on the right.

FreeCAD struggled with this remix, so there are a few odd cuts on the surface of the model, but cura is perfectly fine slicing it, ignoring the imperfections and creating a perfectly smooth model.