A detent arrangement permits {HEAD ~ a metered amount} of foam sheet material to be advanced past {TAIL ~ the planar cutting surface} by the screw feed arrangement 
to be advanced past
A detent arrangement permits { HEAD ~ a metered amount } of foam sheet material to be advanced past { TAIL ~ the planar cutting surface } by the screw feed arrangement
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH