eye surgery used to be done with obdidian flakes before the lazer came along. i've seen edges under a microscope whittle hair but some very smart edge people said that edge would last only as long as the first cut into whatever material. if a blade wo'nt do 3 or 4 deer & still shave then it's not good enough for me these days. the sharpest knife in the world is the diamond knife but if touched by one human finger it's ruined.just my opinion.---cranky72
