Reply by SCOTSMAN

This is ok for light honing not for reshapening or serious sharpening though. Where a tool shape might be altered slightly,not new at all this is an ancient method of honing used also by engineers and by scientists with glass which is about as flat an object as you can get cheaply and different abrasive powders mixed with water for sharpening scalpel like tools for microscopy.Alistair

-- excuse my typing as I have a form of parkinsons disease