About this 3D model
I wanted a mount to hold the SparkFun Bluetooth Mate Silver modem that I'll be using on my RepRap Prusa Mendel thanks to this: http://www.thingiverse.com/thing:13506 I edited the OpenSCAD file for the Arduino module and adjusted it to fit the modem. I also removed the extra tabs (originally there were 6). This should also fit the BlueSMiRF modules as well. I set the length to be 40mm so that I'd have a little room at the end for solder points. This is a derivative of http://www.thingiverse.com/thing:5396 as well.