This intermediate layer is not {HEAD ~ part} of the gel or membrane and is sufficiently pliable to compensate for any irregularity in, or misalignment of, {TAIL ~ the cutting edge} of the cutting tool relative to the gel or membrane 
This intermediate layer is not { HEAD ~ part } of the gel or membrane and is sufficiently pliable to compensate for any irregularity in , or misalignment of , { TAIL ~ the cutting edge } of the cutting tool relative to the gel or membrane
OTH OTH OTH OTH OTH 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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH