Very cool it works thank you ! Despite the seam it s perfect. I guess with a mask and mix texture we could deal with that. Different and same subject, i m trying to get the perfect radial anisotropy and found out the best tutorial about it : https://lesterbanks.com/2022/08/working-with-octane-anisotropy-in-cinema-4d/ Gradient generator with gamma set to 1, invert ON. Projection UV. Transform set to -90 degres.