Japanese Waterstones - Toishi
In Japan, the importance of correct sharpening is given high status as the Japanese reason that perfect work can only be accomplished with a perfectly sharpened blade. It is not just the quality of Japanese tools that excite craftsmen but also the quality of the sharpening. Japanese edge tools, chisels, planes, kiridashis etc. are honed exclusively on special Japanese waterstones.
These Ohishi stones have found favour with UK cabinetmaker John Lloyd and with Lie Nielsen Toolworks in the USA who have now championed them as their sharpening stone of choice.
Classic Hand Tools carry the full range of the Ohishi sharpening stones as do (from May 2015) our friends at G & S Timber in the magnificent Lake District.
DMT - Diamond Flattening Plate video
Have a look as this Youtube Video to see how the Dia-Flat Lapping Plate copes with flattening waterstones.