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To my knowledge this is a knife sharpening stone, it is very nice and muddy. If you have experience with King 1k, this is softer. I have used one on razors many years a go and decided that there are...

Seal the sides of the Aoto or it will eventually crack and split.
You can use either side to hone on.

supposed to mimic natural stone slurry breakdown. It works for knives.
I find that hone too muddy for razors.