I have some meshes that I’m trying to edit in another program (sculptris). When I export them as OBJs, and load into sculptris, the sculptris smoothing function doesn’t work (deletes the faces instead of smoothing them). After playing around with it, I determined that it was due to duplicated vertices. I removed duplicated vertices in meshlab, and it now works fine in sculptris. However, when i import the object back into rhino, the rendering window is now a completely flat shade and the surface features can’t be seen. Flipping Mesh normals doesn’t help. Any ideas why the duplicated vertices would effect the rendered appearance and/or any advice to get the mesh renderings to look the same as the original? I’m attaching a pic of both rendered views (w duplicated vertices and without).