You should try welding the lines with a plugin before exporting: Tig welding, Curvizard and/or whatever you find in the plugin store for welding edges.

@dcbluemoon said: This tool appears the have great potential. An chance there is a tutorial, as I am have trouble introducing Lat.,Long. values into the model? I think I'm missing something simple. After a quick look, I think you would need to create a text file containing the Lat,Long,Elev data, one point per line, and use the Plugins>Coords Tags>Import Coords Tags from CSV.

Glad that helps. By the way, if you haven't done it yet, install the Sketchucation PluginStore plugin and then auto-install Recurve and the other plugins you'll wind up with eventually.