Matt wrote:
There is no direct way to get the .obj from RM, but you can get a raster into QGis by exporting a map project in the ESRI grid format. You can then open this and process further in QGis, which should be enough to get you going.
Alas, but when trying to make a 3d model in QGIS from the format .the asc card is drawn in a line. I assume that the program can't do the squeezing from the .asc format
I'll attach this file, just in case