Hi zarkow,
very interesting video especially the patch issue.
It got me thinking if Freecad could do it.
Found this video https://www.youtube.com/watch?v=SFKmaPaFPXc
So created sample surfaces in Moi and exported as step file.
Opened in Freecad and using the surface workbench to created the patch shown in photo.
So this offers another option for Moi users to create in Moi and if stuck export and patch in Freecad.
Hopefully Michael will add a similar patch tool in the future.
Anyway thanks for the video's
Cheers
Barry