By so pairing a relatively softer sacrifice material with a hard cutting edge, repetitions of zero clearance cutting advantageously may be achieved on a commercial scale, i.e., may include cutting repetitions on {HEAD ~ the order} of {TAIL ~ thousands}, tens of thousands, hundreds of thousands, even millions, without significant dulling of the cutting edge due to the sacrifice material 
By so pairing a relatively softer sacrifice material with a hard cutting edge , repetitions of zero clearance cutting advantageously may be achieved on a commercial scale , i.e. , may include cutting repetitions on { HEAD ~ the order } of { TAIL ~ thousands } , tens of thousands , hundreds of thousands , even millions , without significant dulling of the cutting edge due to the sacrifice material
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