Hey folks,

I've been trying to create a slight convex edge on a surface as demo'ed here:
http://rhino.itami.com/?p=414 (you may need to let Google Chrome translate this page from Japanese to English)

But I can't seem to be able to replicate. The blend tool won't work on this and was wondering if any of you had an idea on how to edit an existing surface to add the convex edge? Thanks for any help...