Hi Gaston - yeah the OBJ to 3DM converter only extracts the wireframe of the polygons to bring into MoI as curves.

That can be useful if you want to use them as a kind of snapping framework or reference while modeling a new version of it, but that will not work well for exporting to STL since STL needs to have surface data and not curve data.

For example if you just draw several lines, that cannot export to STL either, that's the same kind of thing that you have (wireframe only, not solids or surfaces) when you use that particular converter.

> What sotfware would you use if you wanted to make models like
> the ones shown here? Could this me made in Moi3d?

It's not really a good fit to do those kinds of bubbly relief type patterns in MoI.

Bitmap-based tools are a good fit for that, like Burr mentions ZSurf is a free tool and there are also ones like ArtCAM which are specialized for that kind of modeling only.

See some of these previous threads for some more information:

http://moi3d.com/forum/index.php?webtag=MOI&msg=602.7
http://moi3d.com/forum/index.php?webtag=MOI&msg=2799.8
http://moi3d.com/forum/index.php?webtag=MOI&msg=2640.1

Also aside from these "2.5D" programs which take a bitmap and then make a relief out of it, there are also some brush-based sculpting programs which can be good for doing relief type work. For those see these 3 programs: 3D-Coat, ZBrush, or Mudbox.

- Michael