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Regarding that video, that is little more than shilling for the ILR hone.

But when used for touch-ups, lapping will be infrequent. The 400/1000 diamond plate from ChefKnivesToGo will be more than adequate for a diamond plate and you can get by with just wet/dry sandpaper.

And the odds are quite high that even the thinner one will outlive you.

I used nothing but a barber hone for 5 years. For the last ten years I've played with a lot of other hones but a set of those original razors have continued to be maintained with nothing but barber...