I used Dir and white arrows pointing opposite way, so flip, but still not matching, see the green arrow facing east and red south, so mess about with U and V and end up using S swap, better but still has ripples, yet Pascals was smooth, Also the pitch of the waves is nearer together than Pascals yet I used the exact same settings numbers.
so to compare exactly I create a pascal surface, using DupeEdge, section and sweep rail,
apply the same image and settings, and its like a cheese grater, so dir and get white arrows same, then again U and V and needs S, and its almost matching, but again mine has ripples circled in red, Pascals is smooth.
yet now I am on exact same settings . at least the pitch matched, so pitch is very susceptible to curvature of surface it seems.
What is wrong now , how do I remove those sub ripples, dents ?
Displacement for weld follow pascal fail.3dm (562.2 KB)