Quote Originally Posted by Martin103 View Post
Thats a questionable statement! If you read many old barbers manual they clearly show to test the razors using the TNT. I understand many here claims that it does in fact damage the edge but im not convince that the old timers were wrong to teach this after all. Also nails and hairs are made of the same material? something to think about?
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Hmmmm That isn't what that text says,,, It agrees exactly with what we say now...

"It is necessary to test the edge frequently while you hone"


The only real difference is that the Barber's Manual doesn't really differentiate as much as we do between Bevel, Sharpen, Polish, Finish..

It isn't right or wrong it is semantics, but I can tell you without any doubt what so ever that a TNT does dull the fine edge, do your own tests and see, but make sure you calibrate your tests first...

Try it on a DE blade too