The case is for a wireless corne board found here. If you are looking for the Choc version of this case it is here

It was modified from the Corne HiPro Case by mburrows 

The way I modified the case was :

1. Specific holes cut for the switch and reset button 
2. Extended switch and reset buttons 
3. Recessed holes to fit the head of an M2 bolt
4. Removed the overhang above the usb as it was interfering with some usb cables
5. Moved the cutout up a bit to cover more of the battery and look cleaner

I still have some plans moving forward with this case, I will most likely either be updating it or making a v2 including some way of covering the nice nano or integrating a nice view into it. 

I print the case out of PLA solid by increasing the bottom layers in my slicer to the number of layers the case is at .2 mm 90 layers. Once you have printed the case, button, and switch you can install them. Make sure the flat side of the button is facing down, as it came off of the bed. Then add either M2 bolts, standoffs, and a 3D printed plate or use the included hardware from Typeractive's fr4 case set found here.