From a recent thread:
Would it be reasonable to sharpen the sharpening notch itself like a single serration scallop? This would seem to address the problem of snagging that I have experienced myself.
Some will have a choil or 'sharpening notch' between the ricasso and the cutting edge, so it can be be sharpened fully. I'd considered doing so with this one, grinding a sharpening notch, but I tend not to like them for their tendency to grab or snag materials being cut. I can live with the little bit of unsharpened edge there, as it at least won't get hung up on things.
Would it be reasonable to sharpen the sharpening notch itself like a single serration scallop? This would seem to address the problem of snagging that I have experienced myself.