RaspberryPi Zero Case with Magnets

My version of the RaspberryPi Case with magnets for the RaspberryPi Zero. This is an similar design as my A+ case http://www.thingiverse.com/thing:580757 or my RPi 2,3 case https://www.thingiverse.com/thing:688135
The RPi is held in with M2.5x6mm screws in the bottom shell. The screws are directly bolted into the plastic. I usually make sure that the holes fit the thread by drilling it with a 2.2 mm drill.
The top attaches to the bottom by 4 magnets. With that I am able to achieve that there is not a single screw, fastener, etc. on the outside of the case.
There are four options for hiding/opening the camera, gpio, hdmi or the usb connector. If you need a different stl or another modification, please contact me.

The magnets are 4mm in diameter and 4mm in height. I purchased mine from supermagnete.de with part number S-04-04-N
The M2.5x6mm are purchased from rs-components
http://at.rs-online.com/web/p/maschinenschrauben/0560552
Make sure that they are steel, otherwise the magn