I have redesigned the case to be printable all as one part. You can still print them as two separate prints if your printer is too small to print them at the same time.

In the new version, I have added a locking mechanism to keep the retainers locked in the case. There are now grips on the front of the case to more easily open the case.

If you want to modify the model, you can download the .ipt file. If you do not use Autodesk Inventor, you can download the .stp file.

I have included the original V1 files.