VIM3 Case

# This is a case for the Vim 3 embedded board by Khadas.

### It has support for:
- direct m.2 NVMe.
- slipped onto a threaded rod (m3 or #6-32) if you have to maintain the node in the middle of the cluster.
- holes for m3 threaded insert on the bottom case (https://www.amazon.ca/Uxcell-a16041800ux0824-Knurled-Threaded-Embedment/dp/B01IYWTCWW/ref=sr_1_5?keywords=m3+insert&qid=1575953330&sr=8-5)
- recessed hole for m3 or #6-32 cap head machine screws on the top (10mm screw are long enough to work with the insert)

### Assembly
- cut 4 pieces of 1cm metal wire ( ~ 1 mm thickness, a small paperclip is perfect for that)
- insert the 4 pieces into the holes on the bottom case
- the board will hold inside the case as is and a rubber band is enough to hold the lid close while you wait for m3 screws or other fasteners.

### Printing
- maximum nozzle size is 0.6 mm
- minimum print quality resolution 0.1 mm (normal quality in cura).
- use a brim
- no support

#### Cleanup