Hi, this is a HDD travel case designed as a magazine fire arms. A good joke for airport security men ! Be sure to don't miss your plane before ...
It's a try for closing printed box. V1 was a HDD warp, we had to use plumber tools to free the HDD of my brother.
V2 should let a GAP around the HDD, make test with an old one before. You can make your own dimensions with CAO files included, for example 2.5 HDD.