The merits of a particular edge would be circumstantial, based on intended usage and material structure. The zero edge has less structure supporting the edge versus a convex blade. The overlay that was drawn above should have both lower tips overlaid evenly at their edge to show the true difference. They both have superior characteristics dependant upon the application.
Nail on the head..
![[Linked Image from i4.photobucket.com]](http://i4.photobucket.com/albums/y112/marrrtin/Blade%20Tech%20Hunter/zeroedge2.png)
This (excaggerated) pic shows the material that needs to be removed if you want to make a zero edge out of a CG edge..
It's between the red and blue lines <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
