QGIS is the mapping software you didn't know you needed
I’ve used QGIS for a few years to build www.TerraMano.coWe make 3D Maps of American Landscapes in bronze.We take Digital Elevation Model (DEM) data, do light transformations in QGIS and convert it to an .STL file before additional 3D modeling.Our latest project was a hairy one doing Oahu (https://terramano.co/blogs/product/oahu-bronze-3d-map)