After some trial and error we have come up with a revised version of the mounting base. The mount now has closed holes. This allows for suspending with short elastics similar to the one linked to in a previous post.
The file is on shapeways.com as "Case Base 1B" and anyone can order them, as many as you wish.
The link to this is
http://shpws.me/pTqpThis is for the GP2 with the inductor on the bottom. The inductor is about 3mm square cube on the bottom of the main circuit board.
A new base will be designed for the later board which has some component layout changes and has the inductor on the upper surface of the main board. This later board is about 1mm different from this version. This version may fit with a bit of cutting. No guarantees.
The file attached is a pdf that when opened in Adobe Acrobat Reader, allows you to view and rotate the part in 3D.
The intention is to now make a wood mold to vacuum form a plastic case that snaps over this base. I will probably make this out of a soda pop or bottled water bottle. I will display a picture of both when the latest part comes from Shapeways.com.