OK, so I had a thought after looking at the case you printed and had an idea. The top and front could be a single piece that slides onto the body, it’s not dimensionally correct and is only an idea, it would definitely print well in nylon, I don’t want to bang on about nylon but it’s such a good material for these types of projects.
test.stl (158.1 KB)
One more.
test2.stl (795.1 KB)