That edge looks ok, and I think that its the light on the 3v grain that makes it look course
Convex edges often don't feel as sharp as they actually are. Will it slice A4 paper easily? It should.
In regards to sharpening, look at this: Bark River Collectors Association Convex Guide There are plenty of vids on youtube on how to sharpen convex edges.
I'm happy to do it for you if you want, depending on where you live?
Cheers
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