Hello Michael,

for better texturing I use the mesh unfolder Unfold3D - it's one of the easiest unfolder. The downside of Unfold3D is, it is not optimized for CAD user. What do it means? If a mesh is loaded to Unfold3D, than the user can set cuts/uncuts for unfolding. If he set a cut, than the mesh edge is unwelded. The user can uncut the cut only, if the original imported mesh was welded at this edge. And this is the problem for CAD models most, because the mesh edges of a cube are unwelded most and if I would weld it at Rhino, than the cube looks extrem smoothed.

Here an example - without welding vs. welded (Rhino3D)


Now I found, that MOI OBJ export meshes are welded without additional smoothing effects and I can free set cuts and uncuts at Unfold3D. That's great, now Unfold3D is full useable. (MOI3D meshes are great for unfolding.)

Could you explain, why MOI meshes are welded but show no smoothing effect, if I open the mesh at Rhino? Interesting is, if I import a MOI obj mesh to Rhino and export it to Unfold3D later, than the nice welding without smoothing is gone, all edges are unwelded and the unfold dosn't work anymore. This is a big problem for the workflow.

My problem is, that I use MOI3D to mesh NURBs objects for rendering. But once loaded to Rhino, I can't use the meshes at Unfold3D again like I used it direct from MoI to Unfold3D. Some weeks befor I ask at the Rhino forum for that feature, but the developer don't know, how to get a welded mesh without smoothing effect. Could you help please? How can this be done?

Regards,
Micha

Here a screenshot of Unfold3D - I can free choose, where I set the cuts.


PS: The links to the Rhino forum welding threads:
http://news2.mcneel.com/scripts/dnewsweb.exe?utag=&group=rhino&xrelated=302352&cmd_related=View+thread
http://news2.mcneel.com/scripts/dnewsweb.exe?utag=&group=rhino&xrelated=302259&cmd_related=View+thread