I thought someone else might find the perspex case I made for my Sparkfun Bus Pirate handy. It's made in three pieces and is designed to allow for small differences in the manufacture of the board.
Any mill with a 0.05 end mill can make it.
Hope someone finds it useful.
You'll find the DXF and EMC2 NC files I used at:
SparkFun Bus Pirate CNC Perspex Case | fromorbit.com
Cheers,
Alan.