About this 3D model

Simple base to protect components on the under side of the board. Gadgeteer is a modular open source hardware/software platform to build custom gadgets ( http://www.netmf.com/gadgeteer/ ) GHI Fez Spider is a particular mainboard module) http://www.ghielectronics.com/catalog/product/269 Gadgeteer PCB design guidelines ( http://gadgeteer.codeplex.com/releases ) define a raster for mounting holes. Parametric design with snappy sizes would probably make more sense...