I plainly suck at convexing any edge. Really do, so I do a standard V grind at a low angle so that I can easily apply a micro bevel with ceramic rods much like the Idahone ceramic sharpener being discussed or a lansky diamond paddle. Same principles would apply if the grind was convexed (in my ind at least). I have convexed the kitchen knives etc with a rig I build that I use to make knives with as well, but the problem is the finest grit I have been able to find (others on order) is P100 and the shops think that is classified as FINE sandpaper!

This is how it started out, a bit more refined and neater at the moment.


I am experimenting a bit in convexing an edge on a normal benchstone. Simple principles are to start at a low angle, and increase the angle slightly as one goes through the grits, and then strop. Heck knows if I am getting it right.

The only main issue with the Idahone or most V sharpeners out there is not to let the tip role over the stone, this will cause it to become blunt. That is the only tip I can give here from experience.