Chef's Choice Model 130 Sharpening Station
The first stage is for creating the correct bevel. It is used only on exceptionally dull knives. It is a diamond hone and will remove metal.
Stage 2 is used after stage 1, to create a micro serration.
Stage 3 is a polishing/maintenance. I usually polish the blades I use weekly, or just before using, if my wife has been using the knives.
Stage 3 does not "grind, it is a ceramic polishing stage. It doesn't seem to remove metal, or no more than you would with a steel.
I would love to submit the edges for analysis by Jy,l to see what the results are at a microscopic level.