Thread: Convex sharpening techniques?

I have a couple of convex-edged knives (a Svord boning knife and a converted Green River skinner) that I just cannot figure out how to get and keep a good edge on. I have no trouble getting my other knives nice and sharp with an oilstone, but I cannot find a system that works for me on convex blades.

Currently I'm stropping over 600-1000 grit wet-and-dry sandpaper, but I cannot get the edge anywhere near as sharp as I'd expect, and it lasts about 5 min before it's blunt again. I've tried a couple of different strokes/angles and padding materials under the paper (based on YouTube tutorials), but my results only ever vary between 'poor' and 'average', so I must be missing something.

Those of you with convex knives, how are you keeping the edge sharp? What techniques are you using, and are there any good resources you can point me at? Thanks.