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It's the same argument and I still say the same answer to it. If you needed a particular grind to cut a particular beard type the barbers back in the day would have had an arsenal of straights of all...

Your whiskers do not see the blade. They do not care if it's hollow grind or wedge. They only see the very edge no different than a guy about to be guillotined. He doesn't care the grind does he?...