>>>>>But to extract the UV space curves for a surface's trimming boundary this script will do that:

script: /* Create UV curves of selected faces */ var faces = moi.geometryDatabase.getSelectedObjects().getFaces(); for ( var iFace = 0; iFace < faces.length; ++iFace ) { var face = faces.item(iFace); var edges = face.getEdges(); for ( var iEdge = 0; iEdge < edges.length; ++iEdge ) { var edge = edges.item(iEdge); var uvcrvs = edge.getUVCurvesOfEdge(face); moi.geometryDatabase.addObjects( uvcrvs ); } }

Michael how it works? I tested it and it creates very small profiles.