Hi Michael,
I have been using the iso or projection tools to repair a bad offset surface and one of the things I needed to do was extend the surfaces for trimming.
This was achieved by extending the curves then networking to get my new surface.
I know you have mentioned before about adding a surface extend tool but in the mean time would it be possible to have a script that extends curves a given amount (both ends) rather than having to produce a boundary.
Thanks
Barry