Originally Posted by
Euclid440
I have Chosera 400 and 600 for repair work and bevel setting post bread knifing. They work great bringing bevels together quickly. But one of the things I have noticed is, if I try to completely bevel set, bring the bevels together to a sharp intersection where it will cut hair with the 600, I get micro chipping on the edge when moving on the 1K and higher grit stones.
In order to cure the chipping I lightly bread knife on the corner of the stone, enough to get a straight thin line of steel on the edge, 1-2 light strokes, then very light strokes on the 600 to reduce the land height leaving still a thin line of flat steel on the edge, when looking straight down at the edge.
I then set the bevel completely on the 1k with light strokes, not much pressure is needed as the geometry is done by the 4 & 600. 1k circles remove the high spots and bring the bevels together quickly without chipping. I believe anything less than a properly set up, surfaced 1k leaves stria grooves too deep in the bevel that weaken the edge and can surface later.