{HEAD ~ A guitar shaped or figure 8 shaped enclosure wall} hangs down from an under surface of an upper wall of the cutter housing to completely surround the periphery of the right and left cutter blades along {TAIL ~ tip end rotation loci} of the blades at a slight distance therefrom 
{ HEAD ~ A guitar shaped or figure 8 shaped enclosure wall } hangs down from an under surface of an upper wall of the cutter housing to completely surround the periphery of the right and left cutter blades along { TAIL ~ tip end rotation loci } of the blades at a slight distance therefrom
HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH