Your case is just awesome! Very well designed, sturdy and so simple to print (No support)!
In canada, it is hard to find M3 screw in Hardware store. So I used 6-32 1 1/4". they fit perfectly in the first holes, buy the end hole is too small and it will break it. you must drill a very sligthly larger hole(same for the latches).
It was for a friend but I will print one for myself!
Thank you!