About this 3D model
I found this on Google 3D Warehouse uploaded by: COXXON http://sketchup.google.com/3dwarehouse/details?mid=e84ab7ecd16074a339bd6b570381585&prevstart=0 I cleaned it up some in Sketchup and exported the STL file. Update 01-17-2016 someone asked for the original sketchup file and I had a copy so here it is.