Here is a slightly simpler topo map, this time of North Carolina. For this project, by far the most time consuming portion was finding / creating a good definition file for the outline of the state!
I started with an outline that was perhaps too detailed (particularly along the coast), then pulled it into Google Earth to simplify and export as a KML file.
Once I had that, I again used Touch Terrain to generate an STL, and STL2NC to generate the GCode. A simple CC design for the lettering finished it off.
