I have geometry to work on that has been imported, it was supplied in Parasolid format and has been translated to STEP so I could bring it into Rhino (I think it was originally created in Pro-Engineer/Creo).
Several surfaces show the isocurves are pulled away from the surface, and the border is not continuous. Try as I might I can’t get a clean import so will have to rebuild.
My questions is, what is the cause of this? Rhino doesn’t report these surfaces as being bad objects.
My guess is that the part was knitted together at some point with a lower tolerance, I typically work to the default for small mm objects (0.001mm). Any insight would be much appreciated.