OK Thanks guys.One of my sons uses a straight razor so I bought him a water stone ,ceramic, about 6000 grit and he said it wasn't fine enough. I don't know why he even uses one as he has skin like mine & suffers from a condition like acne: according to a skin specialist I was a decendant from someone who survived the "great plague" but I haven't done the research to verify (much easier these days). I used to use an electric 3 head razor but in recent years I use a battery clipper or a disposable. I advised my son to strop it & he already was.He was after a grit like 15000 but the cost benefit seemed outragous beside the difficulty in sourcing one. I did buy one (about 12000 grit i think) only to find it was broken upon opening: only a corner. It was Chinese, & not Veritas or similar quality but extremely expensive, so returned it post haste.