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You can get a pretty smooth edge off of the nani 12k but escher/thuri or coticule are generally the naturals used. Or if you can understand them jnats.

From the look of the box I have 2 of the same hones. If you use on a hard surface so it doesn't rock and use a heel forward stroke or a swooshing stroke it makes it easier(for me anyhow). I have used...