By the way, I use Silo and I find that it works nicely with Carrara. I often make a model in Silo, then turn off the smoothing and export it as an obj file, which Carrara imports perfectly. Then I smooth it again in Carrara and it's just as good as if I had made it in Carrara in the first place. The smoothing algorithms are very similar if not identical, so this works well. The only drawback is that if I had creased some edges in Silo I have to re-crease them in Carrara, but this is not usually a big deal. I don't use Hexagon, but I would assume that it works at least as smoothly with Carrara as Silo does, or maybe much more smoothly. But it's worth mentioning that Silo does work well. As an aside, I must say I've always been very pleased with Carrara's importing tools. I've brought in all kinds of stuff from unknown sources, and the results are almost always perfect. Years ago when DXF was the standard you'd sometimes try to import a spaceship and end up with nothing but three triangles and a vertex floating in nowhereland. - Joe