Problem solved. In short, it's all Carrara's fault. Or it might be the .obj format. I experimented along the lines as nvar1ath0tep suggested, splitting apart the different sides: back, top, left, etc., grouped them together and exported the group as obj. I opened it up in UVmapper and selected the Box projection to show the six sides, then selected each object and projected each one as Planar and arranged them on the sheet. Opening it back up in Carrara, no problem, it took the Parametric texture map. The edges of each object - top or left or back etc. - were creased, but the edges inside each object were smooth and gummi. So I started experimenting with cubes. The results are shown above. Either in the export to obj, or in the import to Carrara, all edges are made smooth, whether they were creased or smooth to begin with, and no matter what the angle of their facets. All edges, that is, except the edges of a polymesh. The outer edges were left sharp. I tried one cube of one polymesh, and one cube broken into two polymeshes. You can the the two meshes pulled apart in the model room image. The two halves are put close together, but their vertices are not welded. So sharp-edged obj imports can be made of seperate objects, or one object with seperate polymeshes. Live and learn. 13r