gun and labs, The thinness is dependent on your needs, nothing wrong with a thin convex.
For what it's worth... when I refine a convex I use a hard surface such as plexiglas under wet and dry sandpapers and work the grind just as I would if honing on leather. I continually check the symmetry with an eye loop and also use magic marker to help control where I'm removing material. I move through the grits from 150 to 1500 or 2000. This maintains the convex but changes the radius (increases radius) making the curve flatter. Once the basic reduction is completed, I switch to leather on wood based hones with black and then green compound and a final honing with diamond paste on leather. Refining a factory grind can take a good bit of time, but once you get the blade to where you want it, it's simple and quick to maintain with just the hones.
For what it's worth... when I refine a convex I use a hard surface such as plexiglas under wet and dry sandpapers and work the grind just as I would if honing on leather. I continually check the symmetry with an eye loop and also use magic marker to help control where I'm removing material. I move through the grits from 150 to 1500 or 2000. This maintains the convex but changes the radius (increases radius) making the curve flatter. Once the basic reduction is completed, I switch to leather on wood based hones with black and then green compound and a final honing with diamond paste on leather. Refining a factory grind can take a good bit of time, but once you get the blade to where you want it, it's simple and quick to maintain with just the hones.