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