Hi Marco,

i do usually 3d color printing with MoI at work. In order to that i need to bring the color
models into Blender to export from there as .wrl (VRML). Our printer can handle ( i heard
that from tests from others) file sizes of up to about 1,2 GB without problems.

The popular printing services like Shapeways, sculpteo or i.materialize etc. have all a poly
count / file size limit, so you can't print your many millions of polygons models from 3DCoat
there, unless of course you *drastically* decimate with 3DCoat.

Smoothness of a model depends, as you know, of how many triangles your mesh has. The
best way you can see that imho is if you use an app like Meshlab in flat shaded mode to
see how facetted your model will look like prior you let 3d print it.

Regards
Stefan