Catia V5 - Automatic Surface parameters 

Thanks for the comment, glad you liked the comparison!

Hello, if you want you can send me the file at 3dcomparisonstuffs@gmail.com and I will make a video about this (if you are ok with that) it is most likely a problem with the mesh, and it requires some mesh cleaning and splitting.

Hello, for surfaces that are not closes you can go with surface thicknes, automatic surface will not work very good