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Just cause it's on the internet doesn't mean it's true or the only way to do something. You can use however many layers as you want. That's just the author's method. Personally, I use 1 layer for...

I'm not sure what you were reading, but breadknifing a razor IS NOT a standard procedure for honing. It's only for razors with large chips or frowns; really, it's more restoranion than honing.
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