{HEAD ~ The method} 1 wherein {TAIL ~ said step} of selectively abrading comprises moving said separated loose pellets over said first face wherein said separated loose pellets have a lower coefficient of friction with said first face than the coefficient of friction between said log and said second face 
wherein
{ HEAD ~ The method } 1 wherein { TAIL ~ said step } of selectively abrading comprises moving said separated loose pellets over said first face wherein said separated loose pellets have a lower coefficient of friction with said first face than the coefficient of friction between said log and said second face
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL 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