{HEAD ~ An apparatus} comprising: a helical cutter in a cylindrical envelope of 1.3 inch diameter by 1.3 inch length, the helical cutter being configured that {TAIL ~ 15,000 to 20,000 shearing operations} per second in the cylindrical envelope are performable by the helical cutter 
{ HEAD ~ An apparatus } comprising : a helical cutter in a cylindrical envelope of 1.3 inch diameter by 1.3 inch length , the helical cutter being configured that { TAIL ~ 15,000 to 20,000 shearing operations } per second in the cylindrical envelope are performable by the helical cutter
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH