Key Case for a Chevy Bolt Key

Here is a snap-fit case I designed for my Chevrolet Bolt key. Because I carry the key in my crowded pocket, I created this case so I wouldn't accidentally press the key's buttons.
For fun I added a Gothic trefoil design. You can use the FreeCAD design file to add your own ornaments, such as your name or phone number, to the case.

LidPrintWithSupport.stl is the lid of the case. Print this lid with supports, because the snaps require support to print properly.
BasePrintWithoutSupport.stl is the base of the case. Print this base without supports. I found printing it with supports produced tiny, useless supports that messed up the smooth exterior.
ChevyBoltKeyCase2.FCStd is the FreeCAD design file.
KeyStraightDown.jpg and KeyRightSide.jpg are the photos of the key that I used to design the case.
Print the parts as they are oriented in the STL files: print the base with the opening at the top; print the lid with the chamfered side down.
To assemble, place your Chevy key, small-end-first, into the base, then snap the lid in place. To open the lid, press on the sides of the lid and pull it away from the base.
I successfully printed this design in PolyLite PLA on my Lulzbot Mini printer, slicing it using Cura Lulzbot Edition set to the Lulzbot Mini Standard Resolution.
The FreeCAD file contains a master Sketch which the other Sketches are based on. You can make small changes in the shape or dimensions of the case by changing that master Sketch.